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Would pulling a vacuum on the PCV side of the crankcase restore lost power from worn rings?
My 2008 GMC Yukon XL Denali (6.2L AWD) has 250K miles and has blowby and presumably worn rings and burns oil. I have read good things about "engine restore" additives, but not ready for that yet. I replaced the valley pan gasket this weekend and the intake had about 1/2 a cup of oil in it when...- WeekenderNutJob
- Thread
- Replies: 9
- Forum: Performance
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Diagnosing the heated seats switch on the passenger front - no LCD and no backlighting
2008 GMC Yukon XL Denali, just the front passenger seat is not heating. The powered seat controls all work in the front on both sides, and the heated seat on the divers side works fine, just the passenger heated seat button is unresponsive, so not a main fuse issue. Looking at the wiring...- WeekenderNutJob
- Thread
- interior seat heat yukon denali
- Replies: 8
- Forum: Interior
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Short vs long term fix for low oil pressure on 6.2
I have a 6.2 on a 2008 Denali. Pretty sure it has VVT. Trying to diagnose a low oil pressure on 232,000 mi . No knocks no check engine oil light. I've installed AC Delco sending unit and screen. Still low. Using a wix gold filter and 5W30 high mileage synthetic. Warm Idle pressure is at maybe...- WeekenderNutJob
- Thread
- Replies: 25
- Forum: Engine & Drivetrain
