There has been many threads and posts for high mileage trucks and cars of all kinds. For this thread, I am interested in specifically LB7 Duramax's.

I have 191K+ on mine. It was bone stock until 185K. After which I installed the mods shown. I am the 2nd owner. The only major trouble the original owner had was injectors. I don't know when they were changed. I have replaced ball joints, a wheel bearing on the left side, instrument cluster, and a 4X4 encoder motor. It runs like a top!

Please post your LB7 mileage and mechanical details, and lets show Ford and Dodge who really has the toughest trucks on the road!

167xxx injectors, 160xxx water pump. Thats it as far as I know.

150k

i got 160k. i have replaced 1 injector, front wheel bearings, water pump, ball joints and front end parts like tie rods, idler, pitman arm

i do have a lift and have been on there for 100k miles. this has been a good truck. i have a gooseneck and pull it regularly. all it knows how to do is work.

235,000 injectors at 181,000 kinda need new ones again though, everything else is stock and un-touched.

208,771 and runnin strong! Injectors @ 150k and Injection pump at 205k other than those and fluids/filters, haven't touched the engine or ali(knock on wood)! Now the rest of the truck, that's a different story :rolleyes:

285,000 miles

Replaced injectors once. Normal wear and tear on the rest. All stock.

still stock, except for a straight thru muffler

230,000. Previous owner had two sets of injectors under warranty. Last set done @ 180,000. Bad FPR but quit surging after I installed the six gun :confused:. Also bad cluster (oil pressure intermittent dim PRND321, Fuel Gauge light out):( and just recently the CD-player went out so I'm switching out for the 6-changer model.

Pump rub kit, front wheel bearings (both) rear axle seals, Pitman Arm, Idler Arm.
2nd owner, first owner towed a BIG boat.
Not bad for 176,000 +

165,600 on original injectors. No mods.

65,000 going strong lol!!!! :D

283k+ miles on mine.

01 GMC, 6" lift 37" tires 4.56 gears (going back to stock height and ratios soon) built tranny, and a few engine mods. Pretty quick for a big old truck :) and runs like a top!

235676 on mine. Injectors at 175000, water pump at 205000, both alternators at 233000 and new control arms, outer tie rod ends, pitman and idler arm and bushing at 234000.

2003 330,000 miles! Injectors at 40,000 and again at 285,000! Water pump 285,000! Brakes 3 or 4 times! Wheel bearing twice! Ball joints, tie rods and idler arm once! Entire A/C system and tranny cooler at 325,000! Runs like it was it was new:)

196,800

235,000 Bone stock
Injectors at 130,000, working on replacing them again
New Transfer case @ 185,000
CP3 @ 185,000
Water Pump @ 150,000
Wheel bearings @ 165,000

206000 injectors at 175000.

Just crossed 168K today. Injectors around 90K, cp3 @ 125K, toasted ally @ 160K, both front wheel bearings replaced, rear axle seal and a window motor assembly. EFI tuned since 125K, built trans for about 5K. Clip in transfer case was intact during rebuild, rub fix installed as insurance.

185K miles. My sig tells most of it. Replaced pinion seal at 130K. Replaced left front bearing hub at about 80K. Replaced right front hub at about 175K and repacked left front bearing at 175K. No other issues. Great truck.

212,000 and still on original injectors. I was told I needed new injectors 30,000 ago but I just ran some cleaner through it and they snapped out of it.

120,000 miles, not alot of miles, but injectors done at 70,000, ideler pulley at 90,000, and caught the pump rub before it happened at 103,000. NOTHING else. :) love the fact that the original brakes are still fine.

210,000 miles on mine, the wifes is 212,000. Hers has had injectors once and idler pullies, no mods. Mine has had injectors twice, wheel bearings twice, water pump, and a slue of other items. Both are good trucks!

I'm curious how many hours some of these trucks have on them. My wifes has way less than mine with similar miles.

115,000
4995 hours

I only had it a few months. Not sure whats been done so far Great truck tho

Just did brakes. Changing leaking hydroboost this weekend
Changing all fluids and filters the following weekend

And now the BCM is acting up ( RR Door ajar issues )

2003 330,000 miles! Injectors at 40,000 and again at 285,000! Water pump 285,000! Brakes 3 or 4 times! Wheel bearing twice! Ball joints, tie rods and idler arm once! Entire A/C system and tranny cooler at 325,000! Runs like it was it was new:)

However did you manage 245k miles between injector replacements? My next modification will be an Air Dog II and I've heard that prolongs injector life. Is that the case here, or just really good luck. At any rate, WAY TO GO!

He got lucky!

It does happen every now and then.

310k miles, injectors X2, Waterpump, Idler pump, Still original brakes and front end....

216k on a 2003 here. injectors at 150k, moog ball joints tie rods and pitman arm, ac compressor at 214k, and just replaced rad and trans cooler because i slammed into a deer going 65..

181k 500hp + since 146k. one third t-case, tranny couldnt hold 500hp, water pump, 3rd set of all 8 injectors, turbo blew up, alot of idler pitman arms, shocks, both wheel bearing, one upper ball joint, drive shaft twisted (oops), cluster lights messed up, new nusbu switch or what ever its called, new front diff acuater, new encoder motor on t-case, motor mount ripped in half, alternater im sure theres more but that the main stuff. btw most of this was done after the 146k mark when I made it fun to drive.:D:D

187,000 Miles

water pump 140,000
Headgaskets & injectors 165,000
front Wheel bearings at 175,000


Runs like a top:D

01 , 3500 / LB7 / 200,050 miles 3rd owner , 1st set inj @ 125,000 u/ warranty / 2nd set @ 199,000 mi ( got a very badly contaminated tank of fuel in New Mexico this summer ) Injector pump @ 170,000 mi ( low pressure ) / installed 2 micron extra filter , WOULD HIGHLY RECOMMEND EVERYONE TO DO THIS , its only $200 ,( would have saved me over 2 grand if had done this earlier ) and adding 1 quart of LOW ASH 2 cycle oil per tank ( 35 gal ) to add lube to ULSD

192000 miles,,,bought it with 25000 on it,,,put a magnaflow exhaust,,volant intake,,and a superchip in it that afternoon,,,so far,,,all the engine has needed was a pulley,,new belt,,and fan!!!! Smokes a bit of white sometimes,,surges a bit,,,I don;t get too worried about it!!!
Have done the idler/pitman deal,,had the transfer case pump rub,,a few set of wheel bearings,either than that,,its been a pretty good truck!!!

02 K2500HD. 235.000 km. All under hood original. Two sets of front hubs/bearings. Still on second set of brakes. Third set of tires. All else original. Drivers seat repaired. My 04 c5500 is another story. 100,00 km and everything and anything has been done on it. I'm on first name bases at Hertz. Tony

112k kindda babied a bit.


injectors at about 90k...

...and a lot of oil and filters

..

65,000 going strong lol!!!! :D

72,000 and hangin' tough...except for the water pump.:D

210,000 now. changed injectors @ 185,000 front diff @ 100,000 1 wheel bearing , pitman arm , numerous front end parts 1 set of brake pads

180K, original owner. Replaced transfer case and steering stuff. Nothing else and yes not the injectors either.

There has been many threads and posts for high mileage trucks and cars of all kinds. For this thread, I am interested in specifically LB7 Duramax's.

I have 191K+ on mine. It was bone stock until 185K. After which I installed the mods shown. I am the 2nd owner. The only major trouble the original owner had was injectors. I don't know when they were changed. I have replaced ball joints, a wheel bearing on the left side, instrument cluster, and a 4X4 encoder motor. It runs like a top!

Please post your LB7 mileage and mechanical details, and lets show Ford and Dodge who really has the toughest trucks on the road!

After posting this thread, I realized I forgot a few things. I don't know at what mileage, but my T-Case was also replaced. Probably the pump rub thing?? I also replaced the passenger window motor, T-Stats, coolant temp sensor, and fan clutch. I think they were all working ok, but just to be sure, I changed them when my truck was getting a little warm pulling 13K up long pulls. I too have the lights in the factory radio out, and both rear door arm rest hangers have broken leaving the panels a little loose. My door handles are starting to crack and I've replaced one already.

Pretty minor things for a truck that runs like a raped ape! :D

456,060 on it tonight. Same owner from day one; which was November 13, 2001.

302K, Factory injectors at 77K, Transfer case clip at 105K, front brakes and rotors at 174K, Alternator, batteries, Injectors by self at 214K, #8 injector at 265K no warranty coil died, Water pump at 272K, probably had the head gasket leak at 272K but did not know, at 302K a rear tire blew and pushed the rear fender up to the frame, 300 miles later the head gaskets used 2 gal or water every 30 miles. For the past 10 days at 302K it is on jack stands no box and down to the block waiting for the heads to return. For 99% of the 302K that truck pulled a 34 ft. modified horse trailer with living quarters delivering Fort Knox safes. It will rise again. It will not be stock.. it will be better. Oh 8600+hours. Uses 2 qts. Amsoil 3000HD in 18 t0 20K. Oil samples every change prove it gets better with age, until you open the engine.

223,332 miles , 5335 hrs, injectors at 186k, t-case at 203k, running strong, pulls my 32 foot 5er regularly with boat or wheelers behind that.

100515 miles..only the batteries, and glow plugs were replaced..:D

227,000 5514 hours. First Owner, really love this truck. I've had GM do the injectors x2, seized up the front diff yoke last winter, got a weeping water pump now. Front hubs x3, one rear axle seal, Original brakes. Original transfer case, no mods.

2003 CC 4WD LT White on Grey H2 Wheels Torsion key lift

165,000 or so. Only had it a couple months and it needs injectors. Last owner said it's on the second set. I knew the truck wasn't properly cared for when I changed the spin-on filter and the magnet was gone. Hopefully the injectors are all that's wrong with it.

Just got the truck about a month ago and had injectors put in it at 190,000 miles. I have no idea of the history on the truck prior to me owning it.

375891 MILES time for 4th water pump NOW!!!!

I gave my 2004 2500HD LB7 with 130K miles to my wife. Original injectors, replaced MAF and gauge panel. We are the original owners as well.

198,000 miles, and just crossed over the 7 year in service date........

200,450 miles Wheel bearings (both) and rear seals and bearings, Carrier bearing (twice) clutch 3 times. Brakes 2 sets..

My truck was bought with 5 miles on the clock and now has 173,400 miles.

82k Injectors
98k Serpentine belt and pulley tensioner
100k Coolant flush
107k replacement dual mass flywheel and clutch
173k Inner tie rods, idler, pittman, and right side ball joints
Original Brakes
..and FPR has a slight surge at idle at time and sometimes sets a code.

110k+ original owner.

Batteries at 75k

Injectors at 107k.

4th set of tires. . .

285K, Injectors @78K and again @235K
Carrier Brg. @ 225K, T-case adaptor @225K
Left wheel Brg @240K, NO Steering/suspension pieces as of yet
This truck has pulled a living quarters horse trailer(weighs 21K) for at least 175K, couldn't ask for better truck!

103,000 now

ECM 80,000
Fuel Rail 87,000
Injectors 98,000
3rd ISS
7th cluster
And some other small stuff.

160k

247k. Almost all stock except bullydog triple gt. Injectors replaced once around 130k, rear axle seal, and idle pulley tensioner. Next repair is replacing my FPR.

yo i have a 2002 GMC 3500 dually 6.6 liter duramax Lb7 with the 1000 series 5 speed allison. K&N cold air intake, PPE flasher, 5 inch magna flow exhaust. Timbren bushings to support 5,000 lbs 10 foot boss v- plow. 127,000 miles hard ones too. Snow plowing, hauling, towing skid steer you name it. This truck is invincible simply put. Surprisingly no injector problems. Front diff replaced at 90,000 miles from wear and tear from snow plowing. I pound on this thing but I also take extremely good care of it. Oil changes at 3,000. Fuel filter at 7,500. Grease u joints ball joints the works faithfully. I also have been using T-100 Fuel additive every 100 gallons. Increases fuel mileage , cleans injectors, helps prevent gelling of fuel. I believe its a must since there is no longer added engine lubrication in diesel fuel anymore. I laugh in the face of FORD lovers.

100300 miles.
So far Ive replaced front brakes once.

132k miles. did my breaks wheel bearing and a shift sensor so far. no major problems

Have 133K on mine, original owner and coming up on my 7 yr date. Replaced front left wheel bearing at 108K, one set of tires at 70K, and the steering shaft two or three times, and one radiator cap. My speedometer is pegged to the right, but with my GPS, I know how fast I am going. Stock everything, no fuel additive added ever, change filters always, so this has been a good truck to me.

155,000 on mine. Injectors at 140,000 and since then; tierods, idler, pitman, brakes, belt and pullies. Love the truck just have a few issues. Hopefully they stop.

312000 miles just replaced injectors 4 ,7 this week and # 3 last year so far so good love this truck.

312000 miles just replaced injectors 4 ,7 this week and # 3 last year so far so good love this truck.

Does she smoke at all now? I think my #4 is going out, as it my DTC shows cylinder 4 misfire and smokes at idle. Has over 130k on these injectors

I notice a little smoke at first but now it seems like the blueish smoke is gone,

256,000 miles, 4th set of injectors, (1) transfer case, (1) instrument cluster, rubbed through the inter cooler tube.

It's a great truck, and I love it, I will be driving it for many miles to come!

got a 01 with 165k with lift and pull a trailor everyday. 02 with 285k and has had 4 sets of injectors drove for year and a half on bad injectors pulling our dozer and scissor lifts put a edge chip on at 270k miles. got a 03 with 262k and a 04 with 270k. we also have a 07 with 110k. love the trucks the 02 is the best. never had a trans fluid change dont no how it is still moving.

2004 With 141,000. Just getting injectors for 1st time, head gaskets, and doing ARP studs. Other than that had 1 waterpump and 2 clusters. ---- Great truck, Not Stock

2003 410,000k - 1 injector(not a set just 1 #7), head gaskets, heads, head studs, balljoints, steering box, pitman, idler, inner an outter tierods, 2 power steering pumps, wheel speed sensor RF, 2 sets of batteries

2003 330,000 miles! Injectors at 40,000 and again at 285,000! Water pump 285,000! Brakes 3 or 4 times! Wheel bearing twice! Ball joints, tie rods and idler arm once! Entire A/C system and tranny cooler at 325,000! Runs like it was it was new:)
Am upto 542xxxkm = 336xxx miles! Don't know too much about her history... Just well maintained, perfect body condition, and I replaced the dual flywheel set-up with a single at 520xxx km (Being the manual tranny) Currently running 0.5L of ATF every tank, time will tell If need be, by the time I need a rebuild (touch wood not for awhile) maybe there will be a wrecker 05 with low miles I can swap engines :D (Keep those injector problems away)

2003 410,000k - 1 injector(not a set just 1 #7), head gaskets, heads, head studs, balljoints, steering box, pitman, idler, inner an outter tierods, 2 power steering pumps, wheel speed sensor RF, 2 sets of batteries


That is AWESOME!!!!

ive got 220,000km on my 03 lb7 and my buddys got 450,000km on his 03 lb7 im pretty sure he had his injectors done at around 320,000km

my buddys dad also has 320,000km on his 03 lb7

2003 410,000k - 1 injector(not a set just 1 #7), head gaskets, heads, head studs, balljoints, steering box, pitman, idler, inner an outter tierods, 2 power steering pumps, wheel speed sensor RF, 2 sets of batteries

Are you running any kind of additive or anything in your fuel?? That seems pretty much unheard of with these trucks..

I've got an 03, 252k, injectors done once at 136k then again at 250k.

See signature.

Are you running any kind of additive or anything in your fuel?? That seems pretty much unheard of with these trucks..

I've got an 03, 252k, injectors done once at 136k then again at 250k.

Yeah same question here too for you joe?

Every once in a while these trucks go a long time on one set of injectors.

For example, mine needed the first set at 204,373 miles. I'm still running those injectors at 250k, with no signs of failure anytime soon.

I think people whose injectors last a long time don't comment on it that much, because they don't think about it. Honestly, I can't complain about 200k on a set. I hope this set goes 200k too!

Oh, and Eric Merchant: HOLY CRAP! Do you have a photo of that odometer!?!

It has to be over 700,000 by now!

2002 398,400 and running 12's with 527 HP :D Yes it has had a hard life,the 500 HP tune has been it it for over 200,000 miles :eek:

265k, bone stock. Injectors @180, and I just replaced an O-ring recently.

2001 3500 XCab Dually 2wd LB7 w/Allison

265k, bone stock. Injectors @180, and I just replaced an O-ring recently.
Which oring? I want to put it on my list to replace in 15 years.:rolleyes:

2004 CA. with 78,000, Injectors at 69,000 Lt Front Wheel Bearing at 68,000, Rt Front Wheel Bearing 75,000, Intermittent sticking tach probably the beginning of cluster problems. Intermittent PO380 code/glow plugs other than that I love the truck. Used Stanadyne nearly every tank since new. Bought pump rub kit but haven't put it in yet.

I think an additive does help the CP3 and FPR. It won't hurt the injectors. With a lift pump and added filtration on top of that, you have done about all you can. Oh and don't do the injector service at the stealership. When I did, 2 months later I had injector problems. Before that, no issues and no balance rates worse than 2. After I had two at 3-4 in drive when hot, which quickly crept up to 6+. They were on the same side, so I think the tech got crap in my system since they messed with it after my 3 filters. If it ain't broke.....

212,000 and still on original injectors. I was told I needed new injectors 30,000 ago but I just ran some cleaner through it and they snapped out of it.
What kind of cleaner did you use(brand, specific product)? And how long did it take effect?

Oh and don't do the injector service at the stealership. When I did, 2 months later I had injector problems. Before that, no issues and no balance rates worse than 2. After I had two at 3-4 in drive when hot, which quickly crept up to 6+. They were on the same side, so I think the tech got crap in my system since they messed with it after my 3 filters. If it ain't broke.....

I feel the same way, but my 7 yrs is coming up in Dec and I would kind of like to know how my injectors are doing. I have never used an additive, so unlike most others on this site, I don't believe they do anything. I haven't a clue how to have the injectors checked and don't trust anyone with the exception of Eric Merchant, but am not driving to Michigan to have them checked. Any suggestions??

2001 , 496000 + don't know the history one set of injectors last week

2001 , 496000 + don't know the history one set of injectors last week


Just getting broken in huh?

Alleghenyrose
To get injectors checked, see if someone around you has EFI live or go to the stealer and have them checked. Balance rates are the end all but a part of the data. What symptoms are you having?

301k kms with a tune since 100k kms. Two sets of injectors, upper ball joints, idler pitman arms, both tie-rod ends, multiple U-joints, one wheel hub and a transfer case. Second owner.

Talked to a guy at work yesterday with an '03 GMC. 190xxx on original injectors, no other engine work and has never used additive. He bought the truck new.

Truck has 260000 miles, 3rd set of injectors, changed at 80000, 160000 and 240000, last set i did myself. Headgaskets at 220000. Also changed transfer case, water pump, some front wheel bearings, driveshaft, and normal front steering and suspension parts. The 2 costliest repairs were the headgaskets and the last set of injectors since it was out of warranty. Currently the front diff and the power steering leak a little oil and the fuel gauge does not work. Overall still runs good.

147k currently with one set of injectors at 103k. Changed both front hubs at around 125k, other than that everything is original including brakes wich are still over 1/2. Bought truck with 50k on it and i am the second owner.

I read through all the postings and I'm amazed at how many of you really like your truck after thousands of miles. A great compliment to GMs light duty trucks.
BTW: a 2003 DRW ECLB with 34,000 miles. Was in storage for 4 years. AWESOME TRUCK.

250,000 miles. second set of injectors, replaced bad instrument cluster, cracked fuel filter housing. Just installed Cognito leveling kit to fix bad upper ball joints, just did my second brake job. Still runs like a champ when I need it to. Running a Hypertech tuner on it usually on 3 except when I tow the fifth wheel I knock it down to 2.

Ive got a stock 2003 gmc 3500 with custom exhaust and it runs great its got 122000 miles

It sure looks like a lot of these trucks are on their second or third set of injectors. What is the biggest common factor for this kind of failure? Is it Fuel Cavitation? Will the presence of a lift pump extend the life of my injectors?

I'm at 119000. 0 miles on second set of injectors.

Bought used in 06 with 186k needed injectors and bought from a dealer for 16k yep 16k. Had injectors done at 198k and was reimbursed full amount from Gm after a bunch of paper work and phone calls to a private shop.
Predator 85 daily, 65 towing 12k-36'-5er
Unknown service prior owner
Front left wheel Bering, all brakes @ 242k Bilstein shocks
Rear pumpkin gasket @186k
FPR (surging) still surging ?
Cat filter @ purchase
Rebuild fuel head 248k
Glow plug relay ( burnt up)
Lift pump
saving for a tranny
needs new driver seat cover
Cluster bulbs, @ steppers
Normal stuff you read about still no pump rub that i know about
And raced at 238k 85 predator @ 14.7 Not Baad for milage....Huh:)

163,000 now. Nothing major engine/trans wise. The plan is to keep puttin the power to her till somethin lets go so I have an excuse to upgrade to go fast parts! ;)
And I have no idea if my injectors are ticking time bombs or not :confused: I bought the truck actually expecting to drop a few grand on them but haven't had any problems......yet....*knocking on wood.....if I just jinxed myself I'm goin to be upset lol :shootself

Same here, 19 + since new. Just had injectors done at 194,000. Pissed off that GMC won't honor the extended warrantee to cover it. It should be 200,000 FLAT, not 7 years or 200,000 which ever comes first. Just because I had better luck than most, I get penalized. The mechanic who did my injectors said that he never saw a duramax go this far with replacing them.

2001, 236K, CP3 @220K, W/P @172K and still on ORIGINAL INJECTORS!!

236k on originals has got to take the cake. Anyone know of a higher mileage truck with originals?

When I bought the truck at 162K, I had the dealer pull all service records up until I bought it and the valve covers have never even been off...... I think I'm living on borrowed time, but if it ain't broke, don't fix it.....

161556.509 mi. water pump, 2 belts, alternator, 3 idler pulleys, 4 batteries, CD player started to hang on to discs. Ball joints all around, front u joints, front pads, transfer case switch, ISS, complete set of shocks. All this still on original injectors. This truck has been a service truck all it's life, in the oil patch of Alberta, regularly seeing -40C weather. It still sees 75 mile a day work commute. I hope it keeps going, like that Neil Young song.

Almost 224,000. New injectors at 189000. New front end parts about 10,000 miles ago.

435034 km stock - injector tubes at 410000 - injectors at 260000
still hauls my 30 foot holiday trailer with ease no smoke

Hopefully mine lasts a while, it still has the stock clutch!

179K: two sets of injectors (one under warrantee and the other DIY). Glow plugs.
My vacuum pump just went out. Gauge cluster, new step motors all around. My horn does not work, can't figure it out and neither could dealer. Ball Joints.

I am still on my original set of brakes:D

I'm not saying a thing, don't want to jinx myself. Best truck I've ever owned, PERIOD.

160,000 miles.

Glow plug issue at this time. Have changed the GP controller. Still getting Check Engine Light. Have to test the GP's now and/or the Relay.

205000 miles.
injectors done a couple times at GM's expense. Pump Rub kit and rear T-case cover. All else normal stuff. It passes my road test.

217500 miles

injectors at 170K

water pump at 150k

inner and outer tie rods ends, pitmann arm and idler arm at 180K

runs good, need to do control arm and ball joints:)

I bought the truck with 60K on it and have never replaced the brake pads

281,000 kms had to replace the FPR to fix the idle surge, other that that second owner i change oil and fuel filters regularly hopefully hse stays ticking for awhile can't afford the injectors to go :)

530k 3500 HD having the 4th set of injecters installed today hope to get another 100k out of it

170k. Ive replaced injectors @135k. Turbo @ 155. Cp3 & waterpump @ 160. All parts are HP. Its making close to 700rwhp too. Its going strong & will push snow this winter!

310k miles, injectors X2, Waterpump, Idler pump, Still original brakes and front end....
Now at 320k.....no changes......

Now at 320k.....no changes......


Man you are driving the wheels off of that truck Tim!
Glad to hear she is treating you good!

156000

Injectors by previous owner and then recently @ 155,000 that was at least the second time the truck has had them replaced. Airbag sensor, 4WD sensor, rear axle seals a couple times, Idle Arm, Pitman arm, Shocks, brakes, batteries, alternator, I have a maintenence log...I have put $4,500 into it in 50,000 miles.

156000

Injectors by previous owner and then recently @ 155,000 that was at least the second time the truck has had them replaced. Airbag sensor, 4WD sensor, rear axle seals a couple times, Idle Arm, Pitman arm, Shocks, brakes, batteries, alternator, I have a maintenence log...I have put $4,500 into it in 50,000 miles.

That's .09 per mile.

100,000 miles just the other day, same injectors although slow to start these days, right front wheel bearings, fuel filter housing/priming pump, instrument cluster, BCM (body control module), passenger air mixing servo, running EFI live, straight pipe turbo back and it's not very loud...

2003 2500 HD Crew Cab Short Box, 195,210 miles-replacing the injectors myself next weekend. The service records show that the injectors had issues at 51,000 miles and again at 80,000. Hopefully I can get another 115K out of the new set!

What kind of fuel milage are you getting over 100000 miles? Im 15 to 16mpg.

at 195,000 miles I'm averaging 17.5 mpg's driving to work everday (18 miles each way). On a longer drive with less stopping I can get it into the low 20's. The truck is bone stock with the exception of my Max Energy programmer and 285/75/16 tires.

173k on mine and all the mods in my signature, 5 sets of injectors though :( since the last set it gets a qt of 2 stroke oil every other fuel tank and fuel filters changed every 5k when oil is changed, royal purple oil since I bought it with 100k. GM Tech said its the cleanest motor internally he has ever seen.


oh yea, and the stock ally :)

167,000 replaced transfer case at 125,000, water pump at 140,000, both idler pulleys, idler and pitman arms, changed brake(originals were on it) at 140,000. I've had the truck for 3 1/2 years and haven't changed injector myself, nor is there any record of it on the vin check.

just hit 104k..so far, just the batteries, and glowplugs have been changed.

Still using Delo 400, and adding redline to the fuel..:D

167,000 replaced transfer case at 125,000, water pump at 140,000, both idler pulleys, idler and pitman arms, changed brake(originals were on it) at 140,000. I've had the truck for 3 1/2 years and haven't changed injector myself, nor is there any record of it on the vin check.

Is your truck late or early 2002?

. . . :( since the last set it gets a qt of 2 stroke oil every other fuel tank . . .




Had my first set of injectors go bad at 107k. Been doing the same thing you are surrounding the two stroke oil since the change out. 111k on it now. . .

Bought my truck used used with 35K on it with the only warranty claim being one set of injectors swapped at 32K. It has 112K on it now, my only out of pocket expense has been the front wheel bearing / hub assembly and both battery's. One hub went at 50ishK and the other at 80ishK. There are a couple of electrical gremlins, i.e, AC will not turn on when summoned, but I have found a work around for 80 percent of the time and the bulbs burned out quickley on the steering wheel controls. Minor gripes for an object that does what it does.

It has done everything I expected it to do and then some. It still gets 19 MPG around town and 24 on the HWY, 12 - 15 MPG towing and gets me to work every day. My wife keeps asking when it will be replaced and I keep telling her when it hits 300K.

305k

210.075 1 front diff 1 belt 2nd set of injectors 2nd set of breaks 2nd set of glow plugs and controller and a unhappy ally 2nd owner

127,789 mile on mine. rplced water pump and ball joints

Is your truck late or early 2002?

i'm not sure, my truck has been in the shop this week for a drivetrain vibration. So i haven't been able to check. Why do you ask?

Will be taking pictures of my Odometer with 200,000 miles here soon, only 64 miles away!

just traded in 2002 with 450,000 miles. 2 sets injectors, 1 allison,

Just turned 160,000 on the odometer. I've done one serpentine belt, 2 idler pulleys, and one transfer case. Brakes still over 50% life, and I've greased the front wheel bearings at 146,000.

Just turned 160,000 on the odometer. I've done one serpentine belt, 2 idler pulleys, and one transfer case. Brakes still over 50% life, and I've greased the front wheel bearings at 146,000.


How did you grease the front wheel bearings? I have picked seals out of sealed bearings before but have never heard of anyone doing this with the front hubs on these trucks.

There has been many threads and posts for high mileage trucks and cars of all kinds. For this thread, I am interested in specifically LB7 Duramax's.

I have 191K+ on mine. It was bone stock until 185K. After which I installed the mods shown. I am the 2nd owner. The only major trouble the original owner had was injectors. I don't know when they were changed. I have replaced ball joints, a wheel bearing on the left side, instrument cluster, and a 4X4 encoder motor. It runs like a top!

Please post your LB7 mileage and mechanical details, and lets show Ford and Dodge who really has the toughest trucks on the road!

Why did you replace your instrument cluster? I think mine is going out and was curious what others experience is.

TIA

How did you grease the front wheel bearings? I have picked seals out of sealed bearings before but have never heard of anyone doing this with the front hubs on these trucks.

Greasing the wheel bearings wasn't too tough. You have to remove the calipers from both front wheels. Then, you remove the hall effect sensors in the hubs. Use a grease needle and pump a couple ounces of high temp bearing grease on either side of the reluctor ring. These units tend to go dry over time. Mine still had plenty in both, but I wanted to make sure since I had read about all kinds of horror stories relating to the wheel bearings drying out over time. I was doing my regularly scheduled axle greasing on my flatbed trailer, so I figured why not? :)

Just turned 160,000 on the odometer. I've done one serpentine belt, 2 idler pulleys, and one transfer case. Brakes still over 50% life, and I've greased the front wheel bearings at 146,000.



How did you "grease" the front wheel bearings?:confused:

Greasing the wheel bearings wasn't too tough. You have to remove the calipers from both front wheels. Then, you remove the hall effect sensors in the hubs. Use a grease needle and pump a couple ounces of high temp bearing grease on either side of the reluctor ring. These units tend to go dry over time. Mine still had plenty in both, but I wanted to make sure since I had read about all kinds of horror stories relating to the wheel bearings drying out over time. I was doing my regularly scheduled axle greasing on my flatbed trailer, so I figured why not? :)

Not to be a stickler, but the wheel speed sensors are variable-reluctance sensors, not hall effect. :D

Not to be a stickler, but the wheel speed sensors are variable-reluctance sensors, not hall effect. :D


These are not zero motion sensors, so this would be true.

03 lb7 with 156k has replaced both wheel bearings, pitman arm, idler arm, inner and outer tie rods, upper and lower ball joints,cp3 pump,and needs new injectors, and some how needs to fix the floater or somethin keeps dieing at a quarter tank.

2004 LBZ w/ 130K miles. Replaced cluster(77K), rear axle seals(94K), and mass air flow filter(127K)

2004 LB7 w/104K.

Under Warranty work (75K warranty):
Replaced Cluster
Fuel Tank sending unit
Drivers side window motor
Radio/CD player
Driver side front wheel bearing
All the joints in the front steering linkage and two ball joints just before my warranty was up.

After Warranty was up:
Computer for the Allison (OMG that's not cheap and while I was on my archery elk hunt.)
Mass Air Flow (same deal not cheap and on the way up to scout for turkey hunt. If I didn't have gauges I'd probably have toasted my turbo as it dumped a ton of fuel in there to compensate to try and make power pulling the 5th wheel up the mountains.)

I put Edge EZ and a 4" MBRP exhaust on two weeks after my 75K warranty was up. I very much dislike the noise of the exhaust but love the extra power from the Edge EZ gives me. Front end has been turned up to fit 285's since the day I took it off the lot with 212 miles on the truck, hence the worn out steering parts.

I promised my wife I'd see the truck hit 200K before I ask to get another one. Since I bought a jeep for a daily driver and the truck is only used to pull the 5th wheel and other odd trips... I now regret that promise as I believe my daughter will be able to drive before I hit the 200K mark. Oh she's only 7. lol...

almost 200,000 on mine, injectors at 120,xxx and other then that only major thing Ive replaced are the water pump. vacuum pump, and serpentine belt and batteries but the batteries counts as wear items to me so nothing that required major tear down (knock on wood) gonna need some glow plugs and injectors soon but thats the norm for these engines, shes bone stock minus an intake, i driver her hard and she runs like a top and asks for more! gotta love a Duramax!!!

I went over 200K on Monday, and then on Tuesday I swapped the #4 injector out, and it runs smoother now.

I plan to keep the truck through the 300K mark easy.........

Water Pump
Upper Ball Joints
Vacuum Pump
MAF Sensor
Transfer case pump housing from Merchant
And Of Course #4 injector I swapped out.
I might go ahead and do tyhe 1 and 3 since I have an extra injector, all I would need is another injector and the seals.... I will think about it this week.

I have a 2003 I bought new..133,000 1 front unit bearing and 1 waterpump,2 u joints and a body controll module..Pump rub hole just popped up,will install the anti pump rub ring soon.
Also I just bought a 2001 crew cab long bed, from texas with 203,000 on it...Runs great needs injectors and and the 4x4 shift forks are toast, But otherwise it is in awesome condition.. paid $8,000 a deal even with the needed repairs..,And It still gets 20 on the hwy.. The boy's lovin it !

2003 LB7, 167,000, 19MPG when it's warm. Bought @163k. At least 1 set of batteries in 09', injectors @90k, rear shocks right when I got it @163k, right rear axle seal & E-brake shoes @165k, rebuilt T-case & U-joints @166k inc. Merchant pump-rub fix.

Still needs a steering box (spitting out fluid at the input), 1 leaking trans cooler line, erratic speedo fixed, and loses prime intermittently.

I went over 200K on Monday, and then on Tuesday I swapped the #4 injector out, and it runs smoother now.

I plan to keep the truck through the 300K mark easy.........

Water Pump
Upper Ball Joints
Vacuum Pump
MAF Sensor
Transfer case pump housing from Merchant
And Of Course #4 injector I swapped out.
I might go ahead and do tyhe 1 and 3 since I have an extra injector, all I would need is another injector and the seals.... I will think about it this week.

you make the injector swap sound so easy lol is there any shortcuts when doing swaps?

2004 LB7 w/104K.

Under Warranty work (75K warranty):
Replaced Cluster
Fuel Tank sending unit
Drivers side window motor
Radio/CD player
Driver side front wheel bearing
All the joints in the front steering linkage and two ball joints just before my warranty was up.

After Warranty was up:
Computer for the Allison (OMG that's not cheap and while I was on my archery elk hunt.)
Mass Air Flow (same deal not cheap and on the way up to scout for turkey hunt. If I didn't have gauges I'd probably have toasted my turbo as it dumped a ton of fuel in there to compensate to try and make power pulling the 5th wheel up the mountains.)

I put Edge EZ and a 4" MBRP exhaust on two weeks after my 75K warranty was up. I very much dislike the noise of the exhaust but love the extra power from the Edge EZ gives me. Front end has been turned up to fit 285's since the day I took it off the lot with 212 miles on the truck, hence the worn out steering parts.

I promised my wife I'd see the truck hit 200K before I ask to get another one. Since I bought a jeep for a daily driver and the truck is only used to pull the 5th wheel and other odd trips... I now regret that promise as I believe my daughter will be able to drive before I hit the 200K mark. Oh she's only 7. lol...

Next time your Mass airflow goes bad, got to Autozone. I paid $140 for mine. Dealer was $500 for part and $200 to install. I told him to pound sand. $200 for a 10 minute job. Don't think so. Not to mention $500 for a small piece of electronics.

you make the injector swap sound so easy lol is there any shortcuts when doing swaps?


I do not know of any shortcuts being this was my first time to do it.

I always instructed the trainees when I would teach them something new on the Airplane the right way, and then let them learn their own shortcuts if they choose to deviate from tech data....

I know this is not Aircraft maintenance, but as soon as I learn something that may make the job easier I will post it, if it already has NOT been posted.

Next time your Mass airflow goes bad, got to Autozone. I paid $140 for mine. Dealer was $500 for part and $200 to install. I told him to pound sand. $200 for a 10 minute job. Don't think so. Not to mention $500 for a small piece of electronics.


I bought it in the rump with the MAF, But never again!

Besides my truck is totally out of any coverage, so I will do any and all maintenance on my truck from now on!

190,000 on a 2002 that I bought in 2006 with 72,000 miles. Most of my miles are interstate, with about 20% in heavy stop and go traffic.
Injectors 4 at 120k, other 4 at 150k
Full brake job, rotors, pads and fluid at 130.
Water pump at 160k
Batteries at 115k and 175k
Shocks at 80k and 140k
Cognito front end parts at 130k
Upper power steering hose 190k

2002 with 184,000.

100% stock until 164,000 then I put on edge j/a with level 6, air dog 2, ppe stage 5 allison, ported intake horn, aftermarket wheels, etc.

Injectors at 60,000, second set still looking great. balance +/- 1.5 except #4, it's +2.4.

Waterpump at 159,000
Starter at 45,000
Alternator at 30,000
crank seal at 170,000
turbo coolant hose at 170,000
had to weld the aluminum coolant pipe that runs through firewall where the bracket is welded on at 180,000
transfer case at 140,000
been through a few front ends.....they don't last long

I need a new fpr I'm pretty sure.
My fuel level sensor has been out since 90,000 but I have a new one ready to install.

397,521 miles!

397,521 miles!


A little more info please?

Like what kind of truck, year, mods, have you had any problems ect......

I just got home from Stone Mountain, GA, only a 550 mile trip, but that puts my truck at 200,700 miles.

Gotta change 2 more injectors on the right side, #1 and #3 then the truck should be good to go for another few miles ;)

240,000 with just shy of 5,000 hours

A little more info please?

Like what kind of truck, year, mods, have you had any problems ect......

I just got home from Stone Mountain, GA, only a 550 mile trip, but that puts my truck at 200,700 miles.

Gotta change 2 more injectors on the right side, #1 and #3 then the truck should be good to go for another few miles ;)

Sorry...just joined but haven't done my sig yet.

Stock 2001 LB7 2WD Crew Cab. I'm shooting for a million out of this thing, just a personal quest I guess.

No major rebuilds / repairs other than the typical injectors. First set went at 180,000 and were replaced under warranty. Second set went at 274,000. I have a couple on the way out now...ugh.

I haul an 18' trailer with a Bobcat and attachments all over the place building playgrounds. I put about 95,000 a year on the truck, towing about 12,000 regularly. I live in VA and have worked as far out as KS and LA.

I'm big on maintenance.... Rotella T6 5w-40 every 8,000. Fuel filter every 10,000, etc....

The truck is a BEAST!

In reality, I'm somewhere in the ballpark of 420,000 actual miles on the truck. Around the 50k marker, larger tires were installed. I've never had the speedometer or odometer calibrated to the 285/75/16 tires. I calculate there is about a 7% correction factor.

I'm being robbed man! I wonder if there is a way to update the odometer. :D

Sorry...just joined but haven't done my sig yet.

Stock 2001 LB7 2WD Crew Cab. I'm shooting for a million out of this thing, just a personal quest I guess.

No major rebuilds / repairs other than the typical injectors. First set went at 180,000 and were replaced under warranty. Second set went at 274,000. I have a couple on the way out now...ugh.

I haul an 18' trailer with a Bobcat and attachments all over the place building playgrounds. I put about 95,000 a year on the truck, towing about 12,000 regularly. I live in VA and have worked as far out as KS and LA.

I'm big on maintenance.... Rotella T6 5w-40 every 8,000. Fuel filter every 10,000, etc....

The truck is a BEAST!


Awesome!

I believe that is getting your money's worth out of that truck!

Mine has 238K, bought my 03' used in June. Injector was replaced between 95-98K.

Since I've bought it... I did some changes/upgrades (in sig).

I'm now at over 350,000 kms on my lb7. hyper tech for 200,000kms now PPE on 160hp setting. Still have original windshield and I live on a gravel road.(although now it is time for a new one)
All original u joints. I put this truck through hell and back. It has mud bogged, worked in the bush, worked on the farm and done everything I asked of it with no problems, and that is why I will continue to buy duramaxes. If this truck can survive the abuse that it has taken so far my, I know my other d-maxes will last as long as I want them to.
1 front diff
injectors @ 200,000kms
1 front wheel bearing
2 front end rebuilds
1 pitman arm
3 broken door handles 1 out side 2 inside(extended cab)
1 leaky heater hose
2 sets of batteries
1 set of brakes

2001 with 560,000 KM on it. injectors at 380,000km no other major repairs.still origional u-joints

I am at 325k miles, still running original brakes, I want to buy a new truck but dang it I am not paying 60k bucks for a truck, That is just plain silly.

04 LB7. 186,xxx. Injectors done before I got it (around 160k I think). Replaced instrument cluster (rebuilt at 170k), Nuetral safety switch 170k, needs tranny flush n filter, speed wheel sensor is also going (abs firing on downshift from 2 to 1). I love this truck!

189956 two sets of injectors, front end joints, and front end bearings/hubs. Still going strong, love the rig. a few electrical items with lights out, but love her hauls our boat and camper just fine.

I don't have the truck, but I bought a LB7 with 220k. VIN shows 7 sets of injectors and a water pump. I'm just finishing a stock rebuild on it.

I am at 325k miles, still running original brakes, I want to buy a new truck but dang it I am not paying 60k bucks for a truck, That is just plain silly.


It seems like only last month you were at 220K!

100k-waterpump, idler arm, pitman arm, and turbo. Turbo was my fault though (overspun it a few too many times)

349k injectors and water pump.power steering pump is getting lazy will replace soon. so far so good!

Brand new transfer case (thank you crappy GM design) and stage 5 suncoast transmission build last week. Had a set of injectors at around 196k this summer, still barely under warranty.

i'm at 275.8k.i'm the second owner.first owner was a land clearer.he has pics on hois phone of it stuck in ditches,just over the rockers going thru water.and bent or ripped out just about everything under the truck.
he did injectors,water pump and the shift module.plus routenely maintained it.
i got it w/ abs lite on,air bag lite on,fog lite wiring ripped out,parking brake cable by axle,driver side ripped off.and rear shock mounte(axle) dangling.
so at 275.8k,i've put 2 transfer cases in(first gm reman failed under warrenty)abs pump motor(fixed lite),fixed brake cable and shock mount.needed 2 thermostats,done and as i was bleeding it,idler pulley bearing let go,fixed that.noticed the aluminum heater line is leaking slightly(on order),oh yeah,both upper arms were unsalvagable,replaced
fuel sender is no good(anybody have one cheap) air bag system has a short per tech 2,need to just figure out lastly why the windows go up and down slowly(figure its a corroroded ground)

but it just got 17.22mpg towing my boat to storage(170miles) in 28deg weather.w/ all its faults i like this beast,i'll never punish it like its first owner(my friend)

What brand are you guys using for control arms (the ones that have replaced them)? Before I would get whatever the local advanced auto had and i have had to replace them every 50-70k miles. I live down 2 miles of dirt road though, i'm sure that shortens the life considerably. This last time I put gm brand on.

Idler and belt tensioner replaced at around 180,000.
Yesterday i replaced both t stats, stuck slightly open.

I have 125,000 miles on these injectors and at idle they still balance +/- 1 with the exception of number 4, which balances at 2.5. They are even closer in drive.

You have AWESOME Balance rates!

2001 LB7 345,000 km with edge/attitude

180,000km 8 injectors covered by warranty
240,000km waterpump

168000 miles original injectors

164000 waterpump, resealed PS pump

Truck just drives and drives and drives..........

I have an '03 ECSB with 219,600 miles, owned it since 212,000. It's had two sets of injectors, heads, head gaskets, glow plugs, #6 piston and rod from hydrolock, rear brakes.

178k, driver's upper ball joint, rear U-joint and tie rod ends at 170k, injectors at 90K, needs CP3 (18K at idle). Original everything else.

Have 197k on my '03. Injectors at 130k along with driver's side wheel bearing. Alternator at 160k. About to replace inhibitor switch and passenger's side wheel bearing.

203,00
1st set of injectors at 168,000
Still original brakes and front end parts.
Unknown leak up front, thinking its brakes.

Hey Y'all, I just bought a 1 ton dually with the LB7.

Had all 8 replaced under the injector TSB. A day later, engine takes a crap. Dead hole in #4

Anyone else blow an engine right after injector replacement on the LB7?

187k on mine bought it at 80k from original owner. @120k put Banks exhaust, intake and programmer on it. Normal wear and tear stuff fixed but that's it. I pull a trailer regularly too, still running strong!! Love it!!

165,000 miles. Injectors changed at 84,000 still working fine. Left ball joint changed about 15K ago. Nothing else so far other than normal maintenance. I typically change the fuel filter before 15K and oil gets changed when the DIC says 50%. Fuel filters are cheaper than $5,000 injectors.

Just passed the 400,000 mile marker! woohoo

Just passed the 400,000 mile marker! woohoo


Have you changed the oil yet?;)
You have been driving that rig! And only 599,XXX More miles to go!

I have just under 800K to go!:D

Hey Y'all, I just bought a 1 ton dually with the LB7.

Had all 8 replaced under the injector TSB. A day later, engine takes a crap. Dead hole in #4

Anyone else blow an engine right after injector replacement on the LB7?

DAMN! Say what?!

i'm not sure, my truck has been in the shop this week for a drivetrain vibration. So i haven't been able to check. Why do you ask?
I am doing a little research, It seems like late 02 and 03 duramax have most of the injection problem.

260k LB7, injectors @150k, first water pump now. May need another set of squirters soon. NO oil consumption, replaced pinion seal @ 200k. Original brake pads!!!
She's tight and runs as strong as new.
2001 2500HD Ext. 2wd

246k miles. Tuned with EFI Live since 163K miles. Preparing for a build.

183,xxx here. Bought in 2004 with 68,xxx. I was putting over 30,xxx a year and now I drive my car. I annaully put on @ 2 - 5K now. Rebuilt tranny @ 70K and injectors @ 96,xxx. Routine stuff. Runs great. Have always had it chipped.

Ben

'01 LB7...computer module at 18,000, injectors at 98,000, injectors, injector pump, water pump and thermostat and head gasket at 170,000. recently installed the edge juice with attitude and an AEM cold air intake. I am now around 201,000 miles.

'01 LB7...computer module at 18,000, injectors at 98,000, injectors, injector pump, water pump and thermostat and head gasket at 170,000. recently installed the edge juice with attitude and an AEM cold air intake. I am now around 201,000 miles.

Another man who appreciates his truck to put all of that in his truck at 170K.

So it is cheaper in the long run, than to take the depreciation hit huh?

I Applaud you!

Have you changed the oil yet?;)
You have been driving that rig! And only 599,XXX More miles to go!

I have just under 800K to go!:D


About to drain the oil when I get home in a few and then close it up and fill it back up in the morning! :D Just got finished with the fuel filter switch....ahh the smell of diesel.

391k+ on the odometer, but has not had stock tires on it since 80k. So it must be over 400K. If I was home I would be worried about the fact that it is smoking again. expecaly since the injectors are still under the 12mo warrenty. Unfortuatly I am 1500+ miles from home with the truck and the truck wont be going home for at least 8 months. Tools and all the people I know are back there, budget does not have room to tear it down right now.

It seems like only last month you were at 220K!
I am at 328k now....ABS took a crap so I am awaiting parts for it. Not to bad tho. 195 bucks for a ABS BPMV.

02 had 212k when sold, and had injectors at 184k, and the guy that bought it from me said it had them again at 218K, but from 186k on i ran ppe on lvl 4. other than that, only thing replaced was tail shaft housing on trans, cracked where the t-case mounts to it.

01 was completley stock 1 owner until 184k when i bought in and straight piped, and ran the quad on 135hp setting still strong at 207k

76k miles, same injectors and pump

Just kicked over 200k yesterday. Both front hubs, rear wheel seal, water pump, tensioner, injectors at 85k, replaced on my own dime at 162k :nutkick: been DD'ing 40% injectors for almost 40k miles now... REALLY needs a trans tho...

Turned 200K yesterday too. Front hubs and the rest in my sig. Good truck otherwise. Even sold my Excursion 7.3 PSD in favor of keeping this truck. One of the big fuel users had to go and the Ford used more fuel than my D-max.

Turned 200K yesterday too. Front hubs and the rest in my sig. Good truck otherwise. Even sold my Excursion 7.3 PSD in favor of keeping this truck. One of the big fuel users had to go and the Ford used more fuel than my D-max.


Finally catching up with me Jack, those trips to Taxifornia are racking up those miles huh?:D

I have 4 new injectors with install kit, going into the right side, if that does not cure the smoke, I will go back into the left side and replace those with the ones I took out of the right side! That will make 5 new ones in the engine....I will get this thing to stop smoking!


You are really digging those TDI VW's arent you? I bet you get over 40 MPG in each one..... I may look for one, I remember the VW Rabbit in the 80's a friend had with the diesel and that thing got like 50MPG!

Drove the bug last time. Only averaged 46mpg but number 3 injector was having some problems out of the box so had to exchange it. Actually that car is more fun to drive that my truck and I have more head and leg room if you can believe it. The best part is that it is much cheaper to drive
They are fun to work on too. Just ordered a set of injectors for my wife's TDI. 100K, its good to have the injectors reset, balanced and re-calibrated. Throwing on a slightly bigger nozzle for economy at the same time and the new nozzles are rated for ULSD too.

5 injectors down, 3 to go...man, you are glutton for punishment hah!

Finally catching up with me Jack, those trips to Taxifornia are racking up those miles huh?:D

I have 4 new injectors with install kit, going into the right side, if that does not cure the smoke, I will go back into the left side and replace those with the ones I took out of the right side! That will make 5 new ones in the engine....I will get this thing to stop smoking!


You are really digging those TDI VW's arent you? I bet you get over 40 MPG in each one..... I may look for one, I remember the VW Rabbit in the 80's a friend had with the diesel and that thing got like 50MPG!

The TDI's are amazing. I have a friend with a new TDI cub jetta and he says the worst he has gotten was 31 mpg in the city :eek:. If i could find one in good condition for under 4K i would be all over it.

On a side note its not a duramax but my old 3500 had 380,000 miles on a stock bottom end with a 6.5.

Oh they are out there. Keep looking. These little engines will go 500K miles if properly fed and groomed.

The TDI's are amazing. I have a friend with a new TDI cub jetta and he says the worst he has gotten was 31 mpg in the city :eek:. If i could find one in good condition for under 4K i would be all over it.

On a side note its not a duramax but my old 3500 had 380,000 miles on a stock bottom end with a 6.5.

Drove the bug last time. Only averaged 46mpg but number 3 injector was having some problems out of the box so had to exchange it. Actually that car is more fun to drive that my truck and I have more head and leg room if you can believe it. The best part is that it is much cheaper to drive
They are fun to work on too. Just ordered a set of injectors for my wife's TDI. 100K, its good to have the injectors reset, balanced and re-calibrated. Throwing on a slightly bigger nozzle for economy at the same time and the new nozzles are rated for ULSD too.


That is all great to hear!

5 injectors down, 3 to go...man, you are glutton for punishment hah!

I should be good at it, and signed off a proficient at doing these injectors for either side! Still cheaper in the long run!



But overall, I just love this truck! it has not given me any reason to hate it!

I should be good at it, and signed off a proficient at doing these injectors for either side! Still cheaper in the long run!


Uhm, maybe if I ever had to tackle injectors in this truck of mine, I should get your wife to allow you to come up here. Might be fun. Better yet come together.

Hey Jack,
You buy the tickets, I will bring the tools and we can tackle the JOB!

In another thread a guy was saying if I pull the ing relay, it will not allow the injectors to fire, so pull the glow plugs and crank the truck over and if there are injectors leaking, then a mist can be seen out of the glow plug hole.

That sounds plausable to me! I think I am going to BE REAL CAREFUL and pull my glow plugs and do this test, sounds simple enough!

He said this is for smoke at idle, and that is what I have.......

I want to know how the test works for you..... I never heard of doing it that way before.

Hey Jack, read the last couple of posts by kdawg, it sounds easy enough for smoke at idle!

http://www.dieselplace.com/forum/showthread.php?t=408540&page=3

I want to know how the test works for you..... I never heard of doing it that way before.


I will post my findings!

Maybe take a video of it for us! :thumb:

403k, injectors just at 400k, still pulling hard as ever.

Hey Jack, read the last couple of posts by kdawg, it sounds easy enough for smoke at idle!

http://www.dieselplace.com/forum/showthread.php?t=408540&page=3

Wow, that is cool. Let us know what you find.

180k on mine and everything in the sig since 100k. Pull a 22k race trailer every weekend in the summer time from mo to tn twice a month.

Ok,im looking at a 2001 CC/dually. Its got 567,000+ on the odometer! Original motor & tranny! 4 sets of injectors. It runs,drives & shifts like new! Is clean inside & out! Im going to buy it,just waiting on the bank!I think it should be on a commercial!

Ok,im looking at a 2001 CC/dually. Its got 567,000+ on the odometer! Original motor & tranny! 4 sets of injectors. It runs,drives & shifts like new! Is clean inside & out! Im going to buy it,just waiting on the bank!I think it should be on a commercial!
how much is the guy asking??

I got 180,000 on mine. Injectors were warrantied/replaced at 60,000 miles. Pitman and idler arm. Upper ball joints and tie rods. Had to rebuild tranny for power adders. Best truck Ive ever owned!

I will agree with offshore78, this is the best truck I have ever owned as well. It seems like the more weight, power and addons you throw at it, the better it runs no matter the reason.

Wow after reading this i may go for a gasser,,what's the deal with all the injector's? GM can't built a reliable injector or am i missing something?

water pumps too?

Do your research before posting. Only the LB7 duramax's ever had a problem with injectors (if you can call it that) They tend to last on average of (130K-175K) mine made it to 197,000 miles on the first set and it was covered under warranty by GM. 20K later i have had no problems with the truck what so ever with the exception of the factory shocks. Adding a lift pump and a better filter can greatly increase the life of the LB7 injectors and they are not that expensive. They are great trucks and get far better MPG then 7.3 and 6.0 powerstrokes.

Do your research before posting.
Calm down big guy it was just a question i'm a long life GM'er,if we all searched there'd be no forum.

from what i'm reading on here every 80 to 90k they can go?

The MOST talked about problem on this forum is injectors on the LB7.
The second most talked about is the Transfer case pump rub issue.
Water pumps come in alot lower in rankings.

CBR600RX7 was probably just trying to direct you to the search button at the top right side of the page. Alot of folks get on here and start asking questions without searching for it first. Forums are for discussions and helping folks out, but some folks need to help themselves first before asking for handouts.

If a person has a problem with their truck, and come on here for help, if they were to use the search button it would cut down on the number of threads because it has been discussed before.

Don't take it personnal, he may have just been trying to help!

Ya under stood i did search but new information is always coming forth so wanted the most up to date as a '01-03 Dmx is in budget also but not if this series engine is relied on injectors every 90k, kinda defeats the idea of longevity in a diesel application IMO.

my last GM Vortec gasser made it to only 300k with no major repairs,we'll see what happens....thanks.

Mine has 145,000. Previous owner had injectors replaced at 70,xxx and the only problems I have now are I think the transfer case shift motor is bad because it wont shift into 4 low and then the rust that plagues these gm trucks

143,000 on the clock. Rebuilt transfer case (due to pump rub), replaced instrument cluster @ 100k (giving me problems again), both front hub bearings, all 4 shocks, CD part of the radio dosen't work, that's getting replaced with a JVC unit as soon as old man winter gives me a chance!
I LOVE this truck!

Was the pump rub only on the '01-04's ?

185,000 on 02Lb7 Ext cab 2wd Injectors at 90,000 Replaced fuel rail at 170,000

Was the pump rub only on the '01-04's ?


99-07.5 models, in the 1500 and 2500 series trucks.

Milage is a gamble, it could happen in as little as 30,000 miles, and some have over 250,000 without problems, it is dependent on driving conditions like stop and go ect. The ones with high milage and without the pump rub are the ones who drive cross country, the intown folks are bitten much earlier!

99-07.5 models, in the 1500 and 2500 series trucks.

Milage is a gamble, it could happen in as little as 30,000 miles, and some have over 250,000 without problems, it is dependent on driving conditions like stop and go ect. The ones with high milage and without the pump rub are the ones who drive cross country, the intown folks are bitten much earlier!
Thank you

^ he is right on. And the search thing was not a bash its just that we see this come up a few times a week and if you go to the LB7 section its talked about probably every day. My injectors where replaced at 197,000 for the first time but some people dont make it to 100,000 and then others go 250,000 plus and have no problems. GM offers a 10 year 200,000 mile warranty but you some times have to fight for it depending on the truck. Your best bet if your buying a LB7 is to buy one that just had the injectors replaced or is running a fuel system upgrade like a airdog that filters the fuel more and adds protection and life to the injectors.

My grandfather has a 2002 6.0 vortect 2500 and has now had the transfer case rebuild twice and its not at 100,000 miles yet. :(

^ he is right on. And the search thing was not a bash its just that we see this come up a few times a week and if you go to the LB7 section its talked about probably every day. My injectors where replaced at 197,000 for the first time but some people dont make it to 100,000 and then others go 250,000 plus and have no problems. GM offers a 10 year 200,000 mile warranty but you some times have to fight for it depending on the truck. Your best bet if your buying a LB7 is to buy one that just had the injectors replaced or is running a fuel system upgrade like a airdog that filters the fuel more and adds protection and life to the injectors.

My grandfather has a 2002 6.0 vortect 2500 and has now had the transfer case rebuild twice and its not at 100,000 miles yet. :(


Make that 7 years and 200,000 miles under a SPECIAL Policy, not a warranty.

how much is the guy asking??
$10,900. But im offering less.

150,xxx miles. tranny completely rebuilt at 90,000. 2 sets of injectors. did all the hoses and new radiator and tranny cooler this week. wrecked it a month ago and just now gettin all the pieces bak together

I am at 325k miles, still running original brakes, I want to buy a new truck but dang it I am not paying 60k bucks for a truck, That is just plain silly.I am at 332k miles, no chnage except I had to replace the ABS motor.

199k miles and still running strong. Just replaced upper and lower ball joints, along w/ the front brakes.
The previous owner had the turbo replaced at some point, not sure on injectors.

Well I am at 201955 and just finished changing 5 injectors, no more smoke and stink, man what I used to be able to do in hours takes me DAYS!

But the savings ARE well worth it!

Truck running strong!

240K miles

water pump @ 185K
Brakes front and rear @ 230K
Front wheel bearings 1@120K 1@175K
Idler pullies @ 105K
Power Steering Pump and pulley@ 230K
Fan Clutch @90K
Alternater @ 205K
Rear Axle Seals 1@80K 1@ 145K
8 injectors @ 150K
!injector @ 215K

Needs 3 injectors, FPR, Hydraboost,2 HVAC door motors.

154K
Need injectors ,have installed left and right side wheel bearing assy, Pitman arm and Idiler arms and front alignment. Had big time problems with the P.S lines .I can't
get a new after market hose to last more then a week without leaking!
I still have the original brakes and they only half gone. These pads are great I bought a new front and rear set from Eric Merchant.
Best truck I ever owned and still drives like new.

bfastcars

208,771 and runnin strong! Injectors @ 150k and Injection pump at 205k other than those and fluids/filters, haven't touched the engine or ali(knock on wood)! Now the rest of the truck, that's a different story :rolleyes:

I'd like to hear the rest of the story:) I mean what else have you replaced??

It seems these trucks should hold up longer I have an '05 lly 138k.. I've replaced both front bearings, ice picked the 2 and 7 injectors at 120k,now the speedometer is acting up, rear wheel is starting to leak, a/c vents are falling apart.. COME ON what's the deal?? I have been GM mostly my whole life, I don't mind little stuff but at 138k it shouldn't be one thing after the other..

Im just about to turn 160k just did the injectors for 3rd time. Got about 80k outta the last set. Im hoping that these last alittle longer, all and all its been a really good truck. Some days id love to go buy a new 2011 but mine is paid off and i really dont feel like dishing out 60k for a new truck.

Can do alot of fixing for the depreciation costs!

210,000 bought new.
Injectors under warrantee at 97,000
Brake lines replaced due to rust at 207,000
Alternator (today) at 210,000 along with serpentine belt.
Pass side front wheel bearing 106,000
Rear brake rotors 201,000
Tires 3 sets Original, set of Toyo, now set of Coopers

02 With 148,000 injectors replaced once

Just returned from a trip to Tenn. and THANKS to Jack (Maxindixon) My truck has been EFI Lived, it has my EGR Crap all turned off, and the truck ran like a sewing maching, clicked off Dang near 20MPG with 285's installed.

MAN With over 202K I am loving this truck more and more, and no truck payment makes it all more easy to swallow!

Thanks Jack!

110 on my crewcab, 100 on my suburban, 175 on my standard cab shortbed(not done yet but thats what it has) Had 252 on my standard cab 6 speed but just blew a headgasket, and sold it ) a buddy of mine has around 360k on his 04 lb7.

03 2500 crewcab 130,000 replaced radiator,injectors,fuel filter housing,right side wheel hub, all before 100,000 mi. still run good seems to get better with age

160k and puttin twins on

Just shy of 168K now. Only items I've ever had to mess with are transfer case R & R, and both idler pulleys underneath the alternator. I've had this truck since 97K. The injectors are getting a bit out of spec, but the fuel economy is still there, so I haven't changed them yet.

213k and in the process of putting in 3rd set of injectors

100k and going on third set. Glowplugs seem to be shorting out every 10k now. Still really like the truck.

I'm at 270,000 kms original injectors.

04 lb7 with 170,000 with original injectors only things i had to replace were the original alternator and batteries at 130k ,and front wheel bearings after i blew them both on a 4 wheel drive level 5 run against a bmw!!! i just replaced the rear rotors and i am told they were originals also! sure beats having the whole tranny fixed on my old dodge at 70k

160k+ and have had a buttload replaced. I like the truck when she runs correctly, but there is always something up with it.

Sent from my DROIDX