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Problem Reports » Idling Problems Due to Vacuum Leak in Throttle Body Gasket
Chevrolet G Series Van (G30)
Report: Idling Problems Due to Vacuum Leak in Throttle Body Gasket
Chevrolet G Series Van (G30) Problem
Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995
Engine Affected: Gasoline
Verified
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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On the 4L80-E Transmission (Diesel and 7.4L gas engine), Transmission fluid may leak through the electrical connector on the side of the transmission, damaging the wire harness and causing the tra...
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