Highter Than Nornal Idle Due to Vacuum Leak on GMC Yukon

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: (–)
Engine affected: Gasoline
4 model years affected: 1992, 1993, 1994, 1995
4 people reported this problem