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lb7
41-58 of 126 Results
  1. 2001 - 2007 (GMT800) Non Powertrain
    So I just bought an LB7 about a week ago and the key fob doesn’t work. Anyone know the FCC ID on a 2004 LB7 fob? I can’t find it anywhere and mine was rubbed off by the previous owner.
  2. Performance Upgrades
    So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...
  3. Drivetrain
    So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...
  4. 01-04.5 LB7 Duramax Powertrain
    Been browsing this site for a while now looking into my lb7 from when i bought it to now, different story though. I had a fully reman’d long block with 45% sac injectors from LDS installed around 8500 miles ago or so, inj hold down for #6 I believe came loose after a moderate pull after about...
  5. General Discussion
    If I wanted to upgrade my turbo, what should I look into? Also, what other caveats/upgrades should I be aware of/look into?
  6. 01-04.5 LB7 Duramax Powertrain
    Hey everyone new to the forum, Recently purchased 2nd duramax (04 LB7 with 146k, Cali truck) after owning a lbz previously. Having issues starting. Truck sat for about 4 years in my brothers truck yard but ran great beforehand. Fired right up first day we pulled it out but now seems to have a...
  7. General Discussion
    Hey everyone, New to the page, recently purchased my second duramax (2004 lb7) and have been going through it getting ready for the road as it was sitting for quite a few years. This might be a silly question with a simple answer, are the front calipers larger than the rear? I purchased...
  8. Gauges, Electronics and Wiring.
    i traded the truck for my 03 6.0 its a 2002 GMC SIERRA 2500 crew cab short bed. the radio didn't work so i pulled it out and took a look at the wiring only to find half the wires weren't even hooked up. after rewiring the radio it worked fine for a day ish. i went to my local reservoir for some...
  9. 01-04.5 LB7 Duramax Powertrain
    Hey all, I’m new to this forum and new to duramaxes. I just purchased a 2001 Chevy duramax with an lb7 and a-1000. Trans was bad so swapped a new one over the weekend and all is well. Since purchase I’ve noticed a few problems. - occasionally cranks a little longer than I would expect, still...
    lb7
  10. Interior
    So my truck is duramax swapped, and my cruise control doesnt work. I read somewhere that for the swaps, you have to take a few other harnesses off the donor truck for things like the accelerator pedal, and the wait to start light, and also the cruise control. The accelerator works fine, and i...
  11. General Discussion
    I need help with my duramax. It’s a 2003 GMC Sierra 2500hd. I started rolling coal one day (stock truck) and with the already hazy exhaust smoke, I knew that I had dropped an injector. I let my dad test drive it and he must have pushed it past the edge as it starts knocking and blowing out...
  12. 911 Problems Forum
    Im new this seemed like the best place to post as I've been tackling it for months. I'll try to keep it short Bassicly trucks at 620xxxkm shes beat the fans owned it since 05 n I'm trying to do it cheapest way possible Bought "new" trans (330xxx) , just did trans, still in limp...I RODE IN THE...
  13. 01-04.5 LB7 Duramax Powertrain
    I am worried that my injectors may be bad. The truck has a lot of white smoke at idle. There are no lights on the dash. There is no knock. There are no other signs that they may be bad other than a lot of white smoke. Ive only had it a day. I dont know about them a hole lot. It was $8000 and i...
    lb7
  14. 911 Problems Forum
    Got a LB7 bought refurbished injectors from injectorsdirect.com last weekend got on the truck hard one time and now I have a fuel knock on cylinder number 7 I know this because I took my scanner and commanded each injector off and when I got to number 7 the knock went away has anyone bought...
  15. 01-04.5 LB7 Duramax Powertrain
    Earlier today I installed a fuel pressure gauge from Glowshift to monitor my AirDog 150. I bought and installed the 8 psi spring from Vulcan Performance. My gauge reads a minimum of 12 psi while the engine is under load and about 14-15 psi while idling. Since I installed the 8 psi spring I...
  16. General Discussion
    Ok, so I’ve got a 03 LB7 duramax, with 402,000 miles. it has a kinda rough idle, like it’s missing on a cylinder, with a constant power surge. when you give it some gas, either in park, or going down the road, it clears up and runs great, but it black smokes like crazy. I’m talking about cars...
  17. 01-04.5 LB7 Duramax Powertrain
    Hey guys, I need some help diagnosing this strange new thing that my 2002 LB7 is doing. As the temps began to drop below freezing I started plugging in my block heater. It would start up fine, no smoke at all. But then upon the first acceleration of the day it’ll blow a decently big cloud of...
  18. 01-04.5 LB7 Duramax Powertrain
    So I just picked up an lb7 with 158,000 miles on it one owner truck , drove it 2 hours and it drove perfect no check engine or anything , when I first checked the truck I drove it got it warm and check the blowby at the oil cap and it was a small haze it seem normal , when I got home doing...
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