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  1. 04.5-05 LLY Duramax Powertrain
    Just took a look at a 05 with the lly and am confused on why this hose was cut. Had a bit of smoke/vapor coming out of it. When I did the oil cap check for a blown head gasket it passed but when I plugged that hole it started to bounce a bit.
  2. 2001 - 2007 (GMT800) Non Powertrain
    Looking for a schematic of the original wiring for an 05 durmax trailer package. Bought this truck used and there is 3, 7 pin trailer plugs under the truck. They all seem to be connected together, when i follow the wires towards the front of the truck i see two bundles above the fuel tank, then...
  3. 04.5-05 LLY Duramax Powertrain
    Mechanic reports seals leaking, fluid low, wants $2,000 to r&r seals. Does this sound reasonable? Disabled USMC vet needs some advice.
  4. General Discussion
    How’s it going ? I have a 05 Duramax with the turbo mouth piece fixed. I am doing a haul from California to Texas with a 11,000 Lb travel trailer with about 1,150 tounge weight. Any advice? I-10 or I-40. Please open the discussion. Changed all the fluids except coolant. Changed CV axles. Put a...
  5. 04.5-05 LLY Duramax Powertrain
    I have an 2005 Chevy 2500HD Duramax, truck ran fine all the time till one morning it would start, just cranked. I bled it and still nothing. I sprayed the air filter with some starting fluid and it started and ran and drive just fine. Shit the truck off and then just cranks again unless you use...
  6. 04.5-05 LLY Duramax Powertrain
    So I have a 2005 LLY Duramax crew cab and I’m new to the Duramax diesel world and I’ve only owned the truck since October 2019 til now and the truck just turned over 205k miles. Now my question is, would a leaking injector return line cause injector knock? The passenger side, #7 injector, return...
  7. General Discussion
    Should there be oil on the glow plugs and injectors when I pull them? I was doing a compression test today, all minus 2 that the glow plug head broke are at 350, and I noticed oil when I pulled the glow plug and an injector. Is that normal? This all started because I had a huge leak of oil...
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