2018 oil cooler assembly replacement?

CrashTestDummy · Nov 21, 2023

Saw a couple of oil spots under the front of our '18 PPV. I climbed under the hood to discover that one of the oil cooler lines where the rubber hose is swedged to the aluminum tubing is leaking. I have a new line assembly enroute, and haven't had a look in the FSM yet, but wanted to see if anyone here has done the change out and can let me know how much of a PITA it might be to do.

Hopefully, this isn't one of those typical GM vehicle jobs where step one is 'remove engine'. Thanks for any info.

B-train · Nov 21, 2023

They aren't too bad. Depending on the bends and route, a lotnof times I've had good luck dropping the front differential down (4 bolts, easy). Once that is out of the way, and splash shields off, you have good area to work.

CrashTestDummy · Nov 21, 2023

Ours is 2WD, so no front diff. It looked like it might not be too bad, but I've had 'gotcha's' before. The lines run from the driver side of the engine block just above the oil filter housing, forward to just to the front of the engine, then turn right across the front of the engine compartment to two flexible hoses then up to aluminum lines that connect to the passenger side of the radiator.

Hoping we'll be able to do this with getting the front end up on ramps and dropping the skid plates. The plates need cleaning anyway.

CrashTestDummy · Dec 31, 2023

Attempt to replace No. 1 was a fail. It seems the Lisle fuel line quick disconnect tool (P/N 37000) will not work with these lines. GM calls for tool CH-41769 to do the job, so I've ordered one. It should be here midweek next week. Fingers crossed.

Just in case, I've also ordered P/N 12630766 which is the cover for trucks without the oil cooler. Since this is no longer used for police work, an oil cooler is a nice thing to have, but not a necessity, so if the thing gives me more grief, I'll just cut the lines at the radiator and cap the ports on the engine with the cover.

Updates as they occur.

Phoenix2k9 · Apr 18, 2024

Any updates on this ? I have the same issue and thinking about replacing the oil cooler line.

2018 oil cooler assembly replacement?

CrashTestDummy

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B-train

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CrashTestDummy

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CrashTestDummy

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Phoenix2k9

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