GMC Suburban 1500 Problem Report

GMC Suburban 1500 Engine Misfire Due to Worn Valve Seat

(4 reports)

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.

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