Chevy and GMC Duramax Diesel Forum banner
  • Hey Everyone! Enter your ride HERE to be a part of this months Ride of the Month Challenge!

Discussions Showcase Albums Media Media Comments Tags Marketplace

1-20 of 195 Results
  1. General Discussion
    So I have an 03 lb7 duramax with roughly 340,000 miles on it. It’s got a bunch of work done to it... transmission, glow plugs and (Bosch OEM injectors) were replaced about 40,000 miles ago. I bought the truck back in March so these repairs happened before I purchased. Truck ran pretty fine...
  2. General Discussion
    Hi everyone, I am new to this forum and to owning a 2018 l5p and therefore also new to using def. I bought 2 jugs of blue platinum (haven’t dumped them in yet) but red in a few spots that the regular blue and blue platinum is harmful to the newer diesels sensors. Any info on what everyone is...
  3. General Discussion
    02 Duramax 6.6 So I'm trying to figure out 2 things, first what is the function of the rectangular shaped part below the alternator and belt tensioner? It has a few small bolts holding on a cover plate and faces the front of the truck. It also has a vent tube that runs down near bottom front...
  4. 11-16 LML Duramax Powertrain
    I’m thinking about buying this truck, it’s a 2015 Chevy 3500hd CCSB, it has higher mileage, 200k, anything major I should make sure was replaced or check before buying?
  5. Performance Upgrades
    I got a 140 fass fuel for my 2017 gmc 3500 L5p , after 2-3 months it just started leaking right around the gauge port , can’t figure out why, if anyone has any ideas please lemme know. This is my first fass fuel system so still trying to figure out why it’s leaking . It’s a slow leak, right when...
  6. General Discussion
    Got an ‘11 LML w/ 250k miles. Has an EFI live tune and everything else is pretty much stock. All I do with the truck is tow my camper and some random miles here and there. Yesterday it just kept cranking with no start. After 15 minutes of cranking on and off it finally started and ran seemingly...
  7. 911 Problems Forum
    hey i have a 2009 chev 3500 diesel, recently it has been giving me random issues shifting, if you come to a stop and go to take off it sometimes shutters & doesn't want to get going, i've also had it going down the highway not able to go over 60mph while pressing the pedal further it continues...
  8. General Discussion
    I have a LLY with a 64mm turbo, airdog 165, 3” downpipe to 5” exhaust. Every time I start the truck and let it warm up then take off for the first half mile or so it will blow white smoke then goes away the rest of the drive. I let the truck warm up to 100-130 at 50°F outside. Anyone know why...
  9. General Discussion
    I had an issue with my 04 lly, poped the hood and there was a good amount of oil around the turbo area. Still creating the same amount of boost and still the same loud whistle it has always when I bough the tuck last August’s. The turbo is just about 2 years old. Some other issues were a...
  10. 11-16 LML Duramax Powertrain
    Hello, so I have a 2011 LML with CP3, exhaust and intake as well as Fass 165. I originally live to New Hampshire and have since moved to Montana. On the drive out here towing my trailer I stopped to sleep for a few hours in eastern MT and woke up a few hours later. When I got back on the road I...
  11. General Discussion
    Hello Guys, Hope I can get some info on how to fix my problem i'm having, I have a 2008 Chevy Duramax 6.6 4x4 and the service trailer brake system is flashing. Bought it this way. So I figure no big deal. Ill check other forms, you tube etc... Everything I have seen that was wrong I have changed...
  12. Vehicles For Sale
    2022 Chevrolet 3500 High Country Duramax Diesel 4x4 Short bed SRW 11k miles (driven daily so may change) Summit White Loaded w/ sunroof 5th wheel prep package Bought new last fall to haul our camper this season but sold camper so no need for a truck this big. Never even pulled the camper yet...
    $79,000 USD
  13. General Discussion
    I need a truck for my business , My neighbor is selling me a 2012 Silverado 3500 6.6 Duramax. It has 430,xxx Miles. Is it worth buying it ? Do they give major issues around that mileage? Its perfect for my business due to it having a flatbed and all. And being around my budget. What are the...
  14. Vehicles For Sale
    Here is my 2011 Chevy Silverado 3500HD single rear wheel single owner immaculate condition. Custom massage seats 6” lift brand new 35” tires. 22x12 American forces. Long bed silver. Duramax diesel PM me or contact me at 512-771-7215 I’m trying to add more photos but this post isn’t letting me. I...
    $29,999 USD
  15. 04.5-05 LLY Performance Parts Discussion
    Looking to see if anyone has tunes they want tested out. Looking for a lope tune and a smoke tune. I have a bully dog gt tuner.
  16. Vehicles For Sale
    List of new parts Fass 100gph Nylon return lines S&B cold air intake S&B intake elbow Mbrp 3 inch down pipe Mbrp 4 inch full exhaust Lower control arms All 4 shocks Front pads rotors and wheel bearings Power steering gear from redhead 18.1 ratio Gm power steering pump All new power steering...
    $13,000 USD
  17. Vehicles For Sale
    Hey This is a low mile Duramax. I changed the bed to a 14-18 bed due to rust. The bed has some dings and dents. I added a lift pump. I did all the recommended maintenance upon purchase. The carfax has high owners, the dealer told me one owner just sold and bought it 3x. The rest of the truck...
    $24,680 USD
  18. General Discussion
    I have a lly duramax that I put in a 64mm stealth turbo. I started it up and making no boost with the veins at 2-4%. While driving it still made no boost. I changed the vane position sensor and in bumped up the veins to 12 but still no boost. Any ideas on what it could be? I checked all of the...
  19. 01-04.5 LB7 Duramax Powertrain
    just bought a 2002 2500HD duramax lb7. When i bought it truck will only start on ether and runs fine no engine codes. I can start it on ether, and once i shut it off if i go to instantly try to start it again it wont fire at all and just cranks. I've replaced FPRV and fuel filter. Other...
  20. Gauges, Electronics and Wiring.
    So this is on my dads truck. He’s not very tech savvy so I’m on here trying to see what you guys have for info. So the first problem is the entire right side of exterior lighting is out. Also is a GMC Denali, (Headlight Eyebrow, cab light, dually marker light and rear tail light) can’t find a...
1-20 of 195 Results
Top