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Duramax Second Generation: 2004.5-2005 (LLY) Discuss the second generation (2004.5-2005 LLY) of the 6.6L Duramax diesel engine & associated components. 2006 LLY engine discussion belongs in Third Generation forum due to the differences of the 2006 LLY and the 2004.5-2005 LLY. Engine related discussion ONLY.

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Old 10-21-2019, 11:23 PM   #1 (permalink)
05LLYCB
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No Oil Pressure

Hey guys I’m new to forum, 05 crew cab 172k,
Drove home from work no problem was inside for about an hour came back out started truck, made it 20ft low oil press light and dinging turned around and parked in garage, I can hear some chattering from harmonic balancer area, and I can hear exhaust noises after shut down, truck did not have exhaust noises after shut down until after the low oil pressure light. Tried mechanical gauge got zero reading, had to jerry rig 4 or 5 fittings to make work in the 1/2 NPT port by oil filter, going to re Teflon tape for better seal and try again tomorrow, then drain oil and check for shavings. Any help would be greatly appreciated.

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Old 10-22-2019, 01:55 AM   #2 (permalink)
Rambos_Ride
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Oil level on stick ok?

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Old 10-22-2019, 01:58 AM   #3 (permalink)
05LLYCB
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Yes full. Don’t smell fuel and no coolant in oil. And no oil in coolant. Trying to get oil filter off now. Hulk hogan must have put it on.
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Old 10-22-2019, 04:20 AM   #4 (permalink)
05LLYCB
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Took oil filter off. Cut it open, I can’t find any shavings or chunks, going to drag a magnet around it tomorrow. Oil did seem pretty thick.
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