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  1. Frankenstein
    so I have a 2001 3500 dually with a descent milage lbz swap and new Allison transmission . It is mostly stock other then the 60hp tow tune. The problem is I can’t seem to get anyone to get the 2001 bcm to communicate with the other computers ( 2006) and it only drives in the 3 tune ( it’s a 5...
  2. 6.5L Diesel Engine
    Hey. New to the group and trying to find some answers. :unsure: No PS/brakes, reservoirs both full? PS pump is starting to make noise. All this started after my boyfriend checked the fluids and forgot to put ps lid back on and I left for work and back home. Next day I drove a mile down the road...
  3. Drivetrain - 2001 - 2010
    Just did both ujoints in my drive shaft 07 LBZ and I noticed that I could almost push the caps in by hand so my question is “ can this be repaired or does it need to be replaced?”
  4. 6.5L Diesel Engine
    So I've read on some posts that the cooling fan is supposed to kick on at around 210F, and be pretty noticeable. A few weeks back I towed a 7k lb 5fth wheel from Grandprarie to Calgary. According to the temperature gauge in the truck it went well above that, maybe 230F when I had to pull up...
  5. Allison OEM
    2006 LBZ with almost 200k - coming down some one lane tight twisty mountain roads I’ll usually drop my truck into M mode and put it into 2 or 1 depending on how steep it is. The other day while in 1 on a steep part, it decided to shift into 2. It did this repeatedly and I had to actually shift...
  6. Duramax Second Generation: 2004.5-2005 (LLY)
    got a 05 duramax removed engine and did head gasket job, did some engine mods while engine was out and installed back into truck and installed stage 2 suncoast trans. started engine 6 or 7 times. i have a ppe xcelerator tuner with level 4 tune installed. tried to load stock tune back and now...
  7. 6.5L Diesel Engine
    Working on a 1995 Chevy 2500 with the 6.5L TD. Had a fault for the optical sensor. Removed the optical sensor and found where the wheel had been chipped. Ran fine but would derate in limp mode - no smoke. Replaced injection pump with rebuilt pump from Pinellas Diesel in Florida. Unable to get it...
  8. Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
    I have a bit of a weird one. Was driving home from FL to Canada, A/C on 24/7. My alternator died and stopped charging the batteries. Made it to an auto store and changed it in parking lot. For the next 8 hours, it seemed to work fine but then in stop n go traffic in Detroit, it starts to bounce...
  9. Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
    Howdy. 2007 Classic 3500 DRW, 108,000 miles. On my first RV trip with the truck in many years. First time going up to Oklahoma then west through NM, Arizona and Utah. Pulling a 38’ fifth wheel with GCW of about 22,000. In the 99-100 degree weather we have been having, I have concerns about...
  10. 6.5L Diesel Engine
    All, My first post though i have been lurking a bit. Just bought my first 6.5. 79k miles. Decent condition. Needed some TLC. Here is what i have done so far. 1) Full front end rebuild 2) Fuel and Oil filters 3) New lift pump... Old one was not pumping well. 4) New Flight Systems PMD and...
  11. Duramax First Generation: 2001-2004 (LB7)
    We have a babied pure stock 2003 2500HD with 84k miles. We are on a year long trip towing our travel trailer. The trailer plus all our gear is approx. 7000 lbs. We have new Bosch injectors, all new filters and all fluids are synthetic. We went over our first small pass and found the truck...
  12. Duramax Second Generation: 2004.5-2005 (LLY)
    So I started hearing this funny noise sounded like a rod knock. Got out the stethoscope and poked around, couldn't find the cause of the noise. About to give up and saw this crack in the bell housing. Started taking bolts out and this piece just about fell out. Been cracked for a while...
  13. Duramax Fourth Generation: 2007.5-2010 (LMM)
    I am replacing my factory y-bridge and I'm having a problem with the last bolt. It is the back-top passenger side bolt. There is about a 1/4" clearance between the bolt head and the turbo compressor housing, and that is not going to be enough to slide the bolt out (I had to modify wrench just...
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