2018 GMC Sierra 3500 HD equipped with 6.0L V8 Gas OHV, 6.0L V8 Flex OHV
1
Upper
SEE TSB 21-NA-199 FOR THERMAL BYPASS VALVE. INSTALL PER GM POLICIES AND PROCEDURES. FAILURE TO FOLLOW TSB MAY RESULT IN REJECTED WARRANTY CLAIM. Eng: L96 8th VIN Digit: G Mfr Code: 6L90
2018 GMC Sierra 3500 HD equipped with 6.0L V8 Gas OHV, 6.0L V8 Flex OHV
Upper
SEE TSB 21-NA-199 FOR THERMAL BYPASS VALVE. INSTALL PER GM POLICIES AND PROCEDURES. FAILURE TO FOLLOW TSB MAY RESULT IN REJECTED WARRANTY CLAIM. Eng: L96 8th VIN Digit: G Mfr Code: 6L90
