GMC Yukon Problem Report
GMC Yukon Highter Than Nornal Idle Due to Vacuum Leak
An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.
Had a leak that looked like it was coming from the bottom left(passenger)side of the w/p. Repla...
Hi..I have a 95 GMC Yukon..failed the low idle portion of the test (NJ) Reading was 726...Stand...
or a blown head gasket
My 2000 Yukon loses oil and coolant. No leaks can be found and it holds pressure on the coolan...
How do I reset the idle??