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Duramax Fourth Generation: 2007.5-2010 (LMM) Discuss the fourth generation (2007.5-2010) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 08-05-2019, 11:04 AM   #971 (permalink)
LETHAL WEAPON
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Join Date: Nov 2008
Location: Temple Hills Md
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I replaced my hydro boost this pass Friday due to leak in between the HB & MC, took about 2.5-3 hours the repair wasn't as bad as I thought.....So I said hmmm let me call the dealer and ask them how much the same job would cost and WOW.....4 hours and $1016!!!!

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2008 3500 HD DUALLY 4WD SLE 420 HP/855TQ 6.6 LMM D-MAX,
4inch Turbo back straight pipe into 7 stacks,
Modified Allison 6 speed done by suncoast,
EFI LIVE with Danville performance Tow tune & ,DPF,DOC,EGR delete Best MPG is 21.3 PVC re-route
Filtration F.A.S.S. w/Donaldson P551313
Niketane filter head w/ Donaldson P553207 w/ site bowl
Wheels 22.5 ALCOA's wraped in Goodyear 255/70/22.5 and spun by 4.56 gears,Window Tint 5% on all windows Gauges... Boost,Fuel PSI,Differential, Air Pressure, Oil temp &EGT and EDGE CTS monitor, Shocker XL and K5LA train horns, Fleece performance Tuff shafts(NO MORE PASSENGER SIDE DISCONNECT SLEEVE TO BREAK OR FRONT ACTUATOR NOT TO WORK) Front driveshaft will spin while in 2wd, MAG-HYTEC differential cover , Alligator Performance tranny lines, Coolant filtration kit, Krytonite UCA,Tie rods, Centerlink and Idler support kit, Merchant Automotive motor mounts....."ARB air locker install


INDIVIDUALITY....You laugh at me because I'm different....I laugh at you because yall LOOK all the same
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Old 08-05-2019, 01:07 PM   #972 (permalink)
Jimpa
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Replaced both cv shafts over the weekend. Working good.

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2008 LMM 2500HD
172k miles
ECM mod to the Duramilager
K&N dry intake
Modified hood for cooler temps
Bumper mounted LED light bar
6 tube 120psi train horn
Fusion controller for monitoring and DPF delete with
straight pipe and baffled muffler
Resonator bypass
PCV bypass
2" torsion key lift and 5th wheel rails.

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Old 09-15-2019, 02:54 PM   #973 (permalink)
diesail
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Installed a titan tank, or at least that was part of it. Had a fuel leak and after dropping the tank found it was a fuel return line rusted through. I have also had a problem with the gauge reading empty at half full since new so I decided to go the whole hog. New fuel line, new sending unit and since it was already out, new Titan tank. It was great putting 50+ gallons of fuel in it today.

A couple of notes for anybody reading this, go with a Dorman fuel line, not OEM. It will save you some headaches and a bunch of money on freight. The hangers for the Titan tank need some tweaking to make them fit. Two small bents and they will drop right in. Give me a PM if you would like details.
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2008 Chevy Crew Cab LT2 2500HD
Summit White


1800W Xantrex Prosine Inverter & third battery
Lovin my Michelin LTX M/S2 tires
RAP (Retained Accesory Power) How-To
RetroSolutions Super Bright Reverse Bulbs

Last edited by diesail; 09-15-2019 at 02:55 PM.
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Old 02-03-2020, 09:04 PM   #974 (permalink)
k5krawler
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I was able to fix the sloppy steering this truck has had for the past 50,000 miles. Two turns of some screws and we are back to tight steering. Look for my quick write up in the suspension and steering forum.
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1991 Chevy K5 Blazer, 7 in' lift, 36'' Iroks, 1 Ton Running gear, Hydro Assist, Full Lockers, Disc brakes etc...
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Old 02-19-2020, 05:32 AM   #975 (permalink)
sfcjones
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Armed Forces Club-10075 Member

Recently made a 2k mile round trip to Texas and back. Time to replace the seat foam on the drivers seat.
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2009 Chevy CC 2500HD LTZ LMM Z71 283k miles
2004 GMC SLT LB7 CC 455k Miles (Retired)(Sold)
2007 Chevy Tahoe with Ranch Hand 240k Miles
2010 Chevy Suburban LTZ 75th Diamond Edition, 106k Miles
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Old 02-19-2020, 09:56 PM   #976 (permalink)
Jefflewis81
Low Boost
 
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Location: Spokane Wa.
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Mostly finished putting my front suspension back together.
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Old 03-04-2020, 06:36 AM   #977 (permalink)
oldschoolbowtie
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Quote:
Originally Posted by sfcjones View Post
Recently made a 2k mile round trip to Texas and back. Time to replace the seat foam on the drivers seat.


Now that is something only a Duramax owner has to worry about

so many trouble free miles the seat foam wore out!!

I just changed the oil and greased following 10000 more trouble free miles
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2007.5 3500HD Silverado LTZ
Kennedy Custom Tune Banks Intake and 4 " exhaust, Air Dog 150, Leveled front end, aftermarket upper control arms, tie rod end sleeves, bypass oil filter, Pusher 3" "hot side" charger tube, aFe Turbo inlet pipe, PPE deep Trans Pan with temp gage, 2 low mod for front differential disable, PACBRAKE 5000# Air Bags with remote on board air...otherwise stock


1953 Chevy truck 496 2 NOS kits ...otherwise stock


1927 Roadster 383 2 NOS kits chassis car (street legal)// otherwise stock
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Old Today, 01:41 AM   #978 (permalink)
bradmond
Low Boost
 
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Location: SeaTac, Wa
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Added an Allison deep pan and TranSynd fluid.

Sent from my SM-G950U using Tapatalk
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Old Today, 02:42 AM   #979 (permalink)
Dmax 5th Wheel
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Months back I replaced my headlight bulbs.
Recently:
Have had Service StabiliTrak on the DIC for over a year or so & finally got around to looking into it. Steering wheel position sensor replaced.
Got a front end alignment done, fuel filter replaced & air filter.
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2009 GMC Sierra 2500HD SLE CC/SB 4x4 LMM
EFI Live, Edge Insight CTS, Flo~Pro 4" DP back exhaust w/ muffler & stock trumpet tip, Alum. bleeder screw, WIF sensor delete plug, Fumoto oil drain valve, Pacer LED cab lights, GM dually light bar under tailgate, Footwell lights, Cobra 29 WXNWST CB radio, Wilson 2000 CB antenna, Kenwood speakers, GM chrome oval running boards, Bilstein 5100s, Michelin Defender M/S on PY0 wheels, Rubber mud flaps

Last edited by Dmax 5th Wheel; Today at 02:42 AM.
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