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  1. General Discussion
    As of right now I have a simple level key and it’s shit love the high really would not want to go taller yes I get It’s a 3/4 ton truck but I still want to ride nice like when it was stock I’ve read that you can do a lift kit and just drop the key is it that simple? I’m looking at the zone 3...
  2. 04.5-05 LLY Duramax Powertrain
    Short story version: Truck sat for two weeks while I waited on parts and time to swap out steering gearbox, pitman arm, and tie rods. That all went fine. Went to take it to the shop today and it stalled out, found that it lost prime. Got it running again and got another 2-3 miles before it...
  3. Introductions
    I changed the injectors all out and cleaned the fuel line. Now the truck will turn over but not start. I loosed the fuel line on the fuel rail on the passenger side closest to the firewall but cannot fuel to come out. I have an AirDog lift pump and it is whirling like normal. I do have fuel at...
  4. 04.5-05 LLY Duramax Powertrain
    I first had it occure on the 5th of July when pulling my trailer up a 6% grade. Trailer is 5th wheel and around 12,000 lbs. It's a longer pull (3 miles ish with corners). Tow haul mode on and overdrive disabled to keep it in 4th with over 2000 rpms. Usually I pull this hill at 55 mph. Full...
  5. 04.5-05 LLY Performance Parts Discussion
    I recently bought a ppe xcelerator economy for my mostly stock lly. The only real mods are a deleted egr with finger stick. Stock trans, head gaskets were done, with arp studs, but no real performance parts. I have torque pro, so I can watch MAF, egr, boost, etc..... anyway, I installed the...
  6. General Discussion
    i have a 06 lly for about a year now and been loving it, i noticed a slight bit of oil around the head gasket on the passenger side rear. checked all the symptoms for a blown head gasket and everything checks out okay and it looks to be traveling down from somewhere higher up. ive read some...
  7. 06-07 LBZ & LLY Duramax Powertrain
    i have a 06 lly for about a year now and noticed a slight bit of oil around the head gasket on the passenger side rear. checked all the symptoms for a blown head gasket and everything checks out okay and it looks to be traveling down from somewhere higher up. ive read some people have seen the...
  8. 04.5-05 LLY Duramax Powertrain
    Driving my trailer home from the weekend and first my truck started acting funny by not letting me rev the truck over 2000rpm. Nursed the truck close to home and the thing just shut off at a light. No check engine light but could a bad fpr cause a no start? Im maybe thinking it was losing rail...
  9. General Discussion
    Just picked up an 05 lly, and when I step on it, it seems like it just doesn’t build boost, or just takes 3-5 seconds to actually kick in and scoot. Just trying to get a general idea of what it could be. Not engine light, nothing. Possible boost leak ?
  10. Transmission Shop
    I have a whole bunch of codes on my 04.5 dmax, and I was looking for a little guidance from someone who knows more than me
  11. 04.5-05 LLY Performance Parts Discussion
    After installing a mishimoto high flow catch can since I get gooey type blow by dripping out of pcv reroute hose, my truck smokes excessively to color of whitish grey, when it’s not hooked up to the catch can then it will come out of it. Also seems to literally pour fuel out the tailpipe as well...
  12. 911 Problems Forum
    My 05 LLY runs great but while at idle starts surging once it’s warmed up to temp. Also when it starts surging the balance rates zero out. No injector knock or other noises just sounds like it’s cammed. Has new FPR Anyone had this issue? 05 LLY studded, deleted, FASS 165, PPE tunes, down...
  13. Duramax Engine Swaps
    Hello, i have a 02 LB7 Complete parts truck. i want to swap it into my 2005 GMC Duramax, what am i looking at needing for this? the LB7 is freshly rebuilt bigger injectos turbo mods headgaskets, etc no blow by. what's the easiest way to do this swap? and what will i need
  14. 911 Problems Forum
    I was working on our lly duramax today. I’m having issues with a rough idle among other things. It idles like crap and doesn’t rev past 1500. It has a little blue smoke, I pulled the plug on the ignition switch to try to figure out a range shift inhibited code, and it started to run fine, but it...
  15. General Discussion
    So here's the situation, I just purchased/inherited a 2006 Silverado 2500 from my elderly neighbour (husband passed away) the truck is absolutely mint inside and out, no rust at all and that's fairly rare for are Ontarian salty winters. The truck only has 118xxxKM on it has the Manual ZF6...
  16. 04.5-05 LLY Duramax Powertrain
    I washed my truck started it afterwards ran really rough had to tow it first it threw codes for every cylinder figured electrical got wet so cleaned and tge ficm and ecm and replaced pigtail tail 7 started it ran fine for a second then went back to same thing had a p1238 code so I replaced...
  17. Introductions
    Hey guys happy too be here. Bought an completely stock LLY a couple months ago. Just wondering where I should start with upgrades I know the EGR is one of the first things but wondering if you guys could fill me in on any thing else? Thanks!
  18. 01-04.5 LB7 Duramax Powertrain
    as the title say i have a 05 lly i just bought it as a project it won't start unless it has help from ether "i know never use ether this is for testing purposes" but it quickly dies after, i plugged in my scanner and i getting around 260FRP without trying to start and around 620FRP when i am...
  19. 911 Problems Forum
    Hi, i need help from some of the experts on here. i have checked my wiring and all seems fine. when i unplug the connectors to the FICM and crank engine i get NO BLOW of the ECU 25 amp when i plug in FICM the 25 amp fuse BLOWS, so its probably bad ficm but they are way expensive and hard to find...
  20. Introductions
    Hello all, just wanted to introduce myself in the proper way before I dive into asking you all a million questions. I’ve been around a few LLYs for the past 7 years or so. My father has a unicorn single cab long bed lly with a stick 6 spd. I currently drive an 05 single cab long bed lly bone...
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