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  1. 6.5L Diesel Engine
    Hey guys, its been a while since I posted, but this is what I'm currently stuck with, please send wisdom: I filled my truck from my on site diesel tank and then drove 4 miles to my destination. Halfway there, my CEL came on and my truck lacked power (limp mode?). I was able to drive the rest of...
  2. 6.5L Diesel Engine
    First of all, thanks to the forum for all the guides for this engine. Which have helped me solve different DTCs and problems. I apologize if there is any inconsistency or misstatement, my native language is not English, I am from Chile and I bought a GMC K1500 with the 6.5L engine, it´s my first...
  3. 6.5L Diesel Engine
    Hey guys. 98 k2500. Truck runs good then dies and will only crank. I replaced the lift pump and tried a known working PMD. When I bleed the fuel system at the fuel bowl and at the T handle it will start running again. I have fuel leaking under the truck but not sure where it’s coming from. So...
  4. 6.5L Diesel Engine
    Hey guys, I disconnected my optical sensor on a 1998 K2500 HD Silverado. The connector on the wiring harness that plugs into the visible part of the optical sensor has a rubber boot/seal on it. A blue ribbed seal. It is no good. I had the injection pump replaced and they broke the clips on the...
  5. All Other GM Diesels
    I just rebuilt my 4.3L V6 olds diesel, it has a Stanadyne DB2-4367 pump. I had it professionally rebuilt, installed it, it ran for 1min 20sec, stalled, wouldn’t restart. I went to the book went through all connections, power connections and couldn’t find anything wrong, about an hour passed and...
  6. 6.5L Diesel Engine
    Hi, have a 95 p30 with a naturally aspirated 6.5 diesel, and the other day after driving for a block it stalled, with some effort I started it back up and made it another couple blocks before it stalled again and now won't start. Lights still turn on fine, i have a water in fuel light(i opened...
  7. 6.5L Diesel Engine
    Recently bought a 94 gmc k2500 6.5l turbo diesel for hauling water. Test drive fine and ran great the 45 minute trip home, but after getting home the problems started the next day. I thought it was the PMD, it was tempted to top of the intake, but still would shut off randomly. I replaced the...
  8. 6.5L Diesel Engine
    Hey guys just had a question on an issue that has me stumped. My truck runs fine sometimes and then out of nowhere I could be driving it and it just shuts off like I turned the key off and when I go to restart it it will just crank and crank and not fire. If I hit the throttle one good time and...
  9. 6.2

    6.2L Diesel Engine
    I have been trying to figure out my problem on my 85 6.2 but never have.it runs fine for 30 seconds then loads up like its flooding then shuts off and is hard to crank.i checked the inlet pressure off tje lift pump and its 5.5 witch I know is the middle of the 5-8 psi recommended.i have 20psi...
  10. Duramax Fifth Generation: 2011-2016 (LML)
    Ok, so I had an automtive repair shop for 35 years and wouldn't let any stinky diesels in the place! Was out looking for my last pu and this GM dealer calls me and says you have to come look! Well, I did, it's an black Denali 4dr 4wd 3500HD with all the goodies! leather, rear seat dvd player...
  11. Medium Duty Trucks
    This is a bucket truck that died while I was using it. The fuel gauge doesnt work, so I thought it just ran out of fuel. Ended up having about 15 gallons in it when i drained the tank. I can prime the truck and I can get it to start sometimes and it will run for 3 seconds and die UNLESS I...
  12. Duramax Second Generation: 2004.5-2005 (LLY)
    hello, i have a new to me 05 LLY that has some gremlins. Shut the truck off at the gas station come out and the truck will crank, start then instantly die. Cluster freaked out, low fuel, service 4wd and needles all tanked. ( the ones that work, will get back to this.) no radio, cant roll up the...
  13. 6.5L Diesel Engine
    I have a '93 Chevy 6.5, it does not have the PMD that I read about, this truck was bought new by my dad and just handed down to me he doesn't drive it anymore. 170000 miles on the body of the truck, 15000 miles on new long block on the engine but still using same existing injectors, IP etc...
  14. 6.5L Diesel Engine
    My grandfather gave me his 98' 2500 ext cab 4x4 with the 6.5. I made the trip up to North Florida from South Florida with my flatbed and dropped it off to the Diesel shop I tow for this past Monday. The truck has sat for the last maybe 1-2 yrs due to my grandfather buying a new truck. Last time...
  15. 6.2L Diesel Engine
    Hello gents, Just looking for a little advice, and a direction to go to help with a new symptom that my 93 GMT-400 has developed. Runs, and drives fine, but randomly will stall when stopping at an intersection. I have used isopropyl in the fuel at times, to keep water at bay, and have changed...
  16. 6.5L Diesel Engine
    Went to run an errand this evening and after 20ish minutes truck stalled. Waited about 30 seconds and would restart and run about 15 seconds and stall again had to do this several times to get home. In the middle of this I tried a different pmd and had no change. Temp outside is about 85...
  17. Medium Duty Trucks
    My 2006 GMC Topkick 5500 Duramax Diesel started acting up about 3-4 weeks ago, it'd start then shut off after running for about 30 seconds. I cranked the he'll out of it, then it finally started up again, then it stayed running. When I park it for a couple of days, I got to the point of priming...
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