Highter Than Nornal Idle Due to Vacuum Leak on GMC Suburban 1500

An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.

RepairPal Verified
Average mileage: (–)
Engine affected: Gasoline
4 model years affected: 1992, 1993, 1994, 1995
4 people reported this problem
0 people shared problem details
Related Items:
A coolant leak may develop form the Intake manifold gasket causing overheating complaints. The...
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases,...
The quick-connect fittings for the heater hoses tend to leak engine coolant. This problem commo...
hen setting still the engine idles smooth but when i put it in gear an take off the engine runs...

Related Content