Car Problem Reports

GMC Vandura 3500 Worn Valve Seats May Cause Engine Misfire

GMC Vandura 3500 Problem
1 Report
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Model Year Affected: 1996

Engine Affected: 5.7L V8


The engine may develop a misfire due to worn valve seats. This fault will cause the Check Engine Light to illuminate. Our technicians tell us the misfire may or may not be felt while driving. They further recommend that both cylinder heads be removed and thoroughly inspected and repaired as necessary.