Engine Misfire Due to Worn Valve Seat on Chevrolet Tahoe

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 233,675 (233,675–233,675)
Engine affected: 5.7L V8
5 model years affected: 1996, 1997, 1998, 1999, more2000
7 people reported this problem
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Constant misfire on cyc 6 Done leak down test high leak removed head valve seat curved over edges preventing seating changed heads