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Chevrolet 3500 Pickup Problems

Highter Than Nornal Idle Due to Vacuum Leak on Chevrolet 3500 Pickup

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.

(11 people reported this problem)

Chevrolet 3500 Pickup Vehicles With This Problem

RepairPal Verified
Average mileage: (–)
Engine affected: Gasoline
11 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000
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Brake problem? Or maybe a faulty head gasket cylinder?
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