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2019 Yukon Xl Denali Issue
I traded in 2015 for 2019 noticed Whistle right away. Mine is at steady acceleration or constant speed. Went back drove another Denali on the lot no whistle. They replaced the exhaust section that has the valve on with brand new no fix. They wired it open and it fixed the whistle but has a...- Todd Gilkison
- Post #14
- Forum: Engine & Drivetrain
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2019 Yukon Xl Denali Issue
- Todd Gilkison
- Post #13
- Forum: Engine & Drivetrain
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2015 Denali-6.2L Broken valve spring
Seems to be a more common issue then GM says. 2015 yukon with 70k miles just had broken spring on #2 intake. Lucky enough it held valve high enough from damaging piston. It did mess up valve guide. They are replacing head valve springs and 1 rocker. Mechanic made mention of Yellow top...- Todd Gilkison
- Post #11
- Forum: Engine & Drivetrain
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2015 Denali-6.2L Broken valve spring
Seems to be a more common issue then GM says. 2015 yukon with 70k miles just had broken spring on #2 intake. Lucky enough it held valve high enough from damaging piston. It did mess up valve guide. They are replacing head valve springs and 1 rocker. Mechanic made mention of Yellow top...- Todd Gilkison
- Post #10
- Forum: Engine & Drivetrain
