Highter Than Nornal Idle Due to Vacuum Leak on Chevrolet Suburban 2500

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

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Average mileage: (–)
Engine affected: Gasoline
8 model years affected: 1992, 1993, 1994, 1995, more1996, 1997, 1998, 1999
8 people reported this problem
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