GMC Vandura 3500 Problem Report

GMC Vandura 3500 Highter Than Nornal Idle Due to Vacuum Leak

(6 reports)

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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Our van will overheat frequently and VOMIT out anti-freeze through the overflow. Very annoying....

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