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Duramax First Generation: 2001-2004 (LB7) Discuss the first generation (2001-2004 LB7) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 10-09-2019, 02:45 PM   #1 (permalink)
hunter_92
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2004 LB7 Fix or Replace

New to the form, I have a 2004 Chevrolet 2500HD Duramax Crew cab 4x4. the truck is starting to show the age on it, and i am trying to decide to start replacing parts here and there or should i look at replacing the truck? Wondering you guys opinions or if anyone has pretty much rebuilt one of these before and would you still do it again or just replace the truck if you had to do over again. The previous owner (which i know) replaced, injectors, injector harnesses, glow plugs, head gaskets, Arp Head studs. it also has a EFI live mild tune from ppei. after market exhaust and air intake. the problems with it now are loose steering (idler and pitman arm), and a coolant leak somewhere (not headgaskets, narrowed that much down.) Of course if i started doing parts i would do the front end and all of that, just curious if it would be a smart move or if i would be better off just looking into replacing the truck all together. it has 226k miles and all work was done about 195k. Thanks in advanced!

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2004 Chevrolet 2500HD Duramax Crew cab 4x4 LB7
EFI live, mild tune from ppei.
after market exhaust and air intake.

Last edited by OkDually; 10-09-2019 at 03:54 PM. Reason: prefix/sig
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Old 10-09-2019, 03:55 PM   #2 (permalink)
OkDually
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Welcome to DieselPlace
I moved your post over to the LB7 section of the forum for more appropriate answers to your issue.



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Old 10-09-2019, 08:52 PM   #3 (permalink)
chillyw2
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I’m in the same boat. I’m interested to hear peoples opinions on this. 2002 with 183,788 and a little bit of smoke at idle.
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Old 10-09-2019, 09:45 PM   #4 (permalink)
turbostang7
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IMO if you like the truck, fix it! Putting 2k a year or so into an old truck is still cheaper than a truck payment
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Old 10-10-2019, 01:32 AM   #5 (permalink)
davester
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Yeah, the stuff I need to fix with my truck (odd electrical problem, leaking hoses, general wear parts, now the hydroboost has a bit of a leak, a seal on the front diff keeps failing) is WAY cheaper than a monthly truck payment/higher insurance payment.


I've got 80k km on my rebuilt transmission & transfer case, and if the engine looks like it's failing, I'll rebuild the engine in my parts truck and swap it in.


The most likely parting of my truck and me will be a collision that costs more than the truck is worth (a fairly low hurdle to clear) and is damaged in a way I can't repair.
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Old 10-10-2019, 02:17 AM   #6 (permalink)
duramaxforlife
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I would fix it. None of your problems seem to difficult and it's much easier to work on a 04 than a new truck and it's also alot cheaper
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Old 10-10-2019, 04:17 AM   #7 (permalink)
Rambos_Ride
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Rust issues would be my deciding factor not mechanical on these gen 1 trucks.

If it’s solid and you like it fix it. Even better if it’s paid for, I hate car payments!

Of course, I would sell it and get a 1ton CC4x4 dually...because I think everyone should have at least 1 dually!
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Old 10-16-2019, 08:41 PM   #8 (permalink)
fcaramadre
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Keep it. you have the best engine in it. No emissions, lots of power. I have 217,000 on mine and wouldn't trade it for one with all that junk they put on them now. Mine smokes a little on idle once and a while too. throw some good injection cleaner in there. And get rid of that stock fuel filter. Its only good for 10 microns. Get a nicktane adapter and run a cat filter that filters to 2 microns. Thats why the lb7 had such problems with the injectors. Stock filter lets too much junk through it. And the cat filter is a lot cheaper too. Change it twice a year and you wont have any problems.
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Old 10-17-2019, 09:23 AM   #9 (permalink)
Tolliwacker
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Cheaper to keep her....

Then again, I am biased to my LB7...

I always say.... "I can do ALOT of fixing for a new truck payment".
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Old 10-17-2019, 11:37 AM   #10 (permalink)
Lingus
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I bought the Raped Ape new and she's got 310k on her. Yep I've spent a tidy sum on injectors($4k),gaskets ($2k) and always spending money replacing wear items. Probably $7k or more. Just replaced the windshield today for $180. It's worth it.

Biggest challenge is keeping it rustproofed.

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