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  1. 6.5L Diesel Engine
    During relocating my beloved GMC died.. Injection pump., paid a guy to swap it with a remain, the remain was junk. Order new and while waiting decided to pull heads, both had cracks so I replaced both and did head gaskets timing & injectors. Compression was 325-350. I didnt install...
  2. Duramax Second Generation: 2004.5-2005 (LLY)
    I love my lly however I have been having an issue. The check engine light does not come on but the truck has been misfiring. On cylinder 2 and seven along with multiple random misfire. I have checked the plug on cylinder two and the wire fell out of the crimped wire holder. I reconnected the...
  3. 6.5L Diesel Engine
    Hi all have purchased this 1994 suburban 6.5 TD about 3 months ago starts pretty well and idles as well have noticed that when at cruising speeds it has spurts in power like a 50hp kick for a split second ?? Then noticed that it happens when I activate the turn signals both L/R or tap brake...
  4. 6.5L Diesel Engine
    1993 Chevy Silverado k3500 , DB2 4911,NV4500, 292k miles. Original DB2 was plagued by the hot start issue at 284k. Replaced with a rebuild that lasted 13 months. 1 month past warranty. At 1700 rpm it would fluctuate a couple hundred rpm. At 2000rpm it would auto rev up to 2500rpm. Bucking and...
  5. 6.5L Diesel Engine
    My 97 6,5 Turbo diesel Silverado 2500 4x4 rough idle sounds like big cam. Black very thick smoke, revs up and down on its own.Like riding a branch horse.pléase help lot of bad things been happening no móney coming in I might lose it no place left for me and truck I depend on it for shelter too...
  6. 6.5L Diesel Engine
    So i have a 1995 suburban ran great when i bought it this january but started cuting out under load when warm and showed symptoms of a bad IP or PMD pmd checked was good and so changed ip and pmd to no prevail After ip change putting the lp on ignition power. New pmd. New pmd extension...
  7. GM Gassers
    We have a 91 Chevy 454 P30...they say that's like a 2500. It was flooding out and backfiring. We got a new throttle body that corrected the flooding and back firing. She ran fine until we tried to drive her so we replaced the distributor, map sensor and blocked the port on the EGR. It has new...
  8. 6.5L Diesel Engine
    Hello all, first post! First of all, thank you VERY much for all the incredible info on this site. It has helped me fix my truck on numerous occasions. However, I have recently reached a bit of a dead end in my troubleshooting abilities. I'm sure I'll get some great suggestions. In general...
  9. 6.2L Diesel Engine
    Hello everyone. I am running into some trouble and would appreciate any advice I can get from some folks with experience. I recently did a 4x4 conversion on my 1986 g30 hi cube van. It has the legendary 6.2 and since I had to take it out to fabricate the new engine mounts and leaf spring...
  10. 6.5L Diesel Engine
    Not me. My truck. Me? Run nice. Look ugly. Just bought a 95 Chevy C3500HD turbo diesel dually w/ long wheel base, regular cab and chassis, with a Reading backpack tool box, and a 10' stake side dump body. 92000 miles. It's well preserved. Nothing worrisome showed up when I first looked it over...
  11. 6.5L Diesel Engine
    Ok I'm new to this place so don't give me too hard of a time, but I've got a problem with a '96 6.5 Detroit, we just rebuilt it this spring with I believe high quality parts at least most of them, and have been testing it ever since. It gave us problems one time with a broken ground wire but we...
  12. Duramax Seventh Generation: 2020+ (L5P)
    Just traded my 2018 2500 Duramax for a new 2020 2500 L5P and notice a throbbing sound at idle when the engine is warmed up ( currently 2200km). Dealership says it is covered under the #16-NA-32 Bulletin on common engine noises Duramax 6.6L, but this is not the ticking or cycling that I have...
  13. 6.5L Diesel Engine
    Hi again guys. Ive been quiet for a while now, occupied with fixing the problems with the truck. Anyway, a new confusing thing appeared. Ive been out driving around and was going to drive the truck in to the garage. I pushed the throttle to half and nothing happened. The rpm did not climb...
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