Suburban 1500

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

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: 190,000 (190,000–190,000)
Engine affected: Gasoline
4 model years affected: 1992, 1993, 1994, 1995
6 people reported this problem
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High idle, sputtering. Fixed high idle and check engine light.