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External Oil Cooler?
The Monroney sticker for my ‘18 Yukon XL Denali says “Cooling auxiliary external transmission oil cooler, heavy-duty air to oil”. Most of the posts I’ve seen said GM likes to use a portion of the AC condenser for cooling the transmission. I looked - albeit briefly and in a rush - for an...- HomeMadeSin
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- Replies: 3
- Forum: Engine & Drivetrain
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Oil Level Wait Time
Troubleshooting my ‘18 Yukon XL Denali. First thing, checking oil level: manual says wait a minimum of 2 hours. Anyone test this theory? I waited an hour (after a 10 min commute to work for flat area to check). Didn’t see any difference at 15, 30, 60 minutes so I doubt 120 min is going to make...- HomeMadeSin
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- Replies: 21
- Forum: Engine & Drivetrain
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Water Pump Failure
2018 Yukon XL Denali, 79k miles on the clock. Making the trek home from southern FL last night (27 Dec 2024). About an hour and a half left to go, I start hearing a chirping sound. Inconsistent but definitely noticeable. Had the Mrs, cat and Xmas stuff so my plan was to listen and watch. For a...- HomeMadeSin
- Thread
- Replies: 9
- Forum: Engine & Drivetrain
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Yukon vs Yukon XL MRC shocks
2017 Denali (non-XL) and 2018 Denali XL. Almost identical options with only diff being sunroof in XL and color. Both have the Z95 RPO code and both have the same physical rear shocks from the looks of it (BWI Group AC39 on sticker). I didn’t get a good look on the fronts, but when checking a...- HomeMadeSin
- Thread
- Replies: 4
- Forum: Street Suspension
