Highter Than Nornal Idle Due to Vacuum Leak on Chevrolet 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: 190,000 (190,000–190,000)
Engine affected: Gasoline
4 model years affected: 1992, 1993, 1994, 1995
5 people reported this problem
1 person shared problem details
High idle, sputtering. Fixed high idle and check engine light.
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