Engine Major
Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
What Owners Say
"Had to replace lifters,valves, rods,and cam shaft. All components were replaced under original 100000 mile drivetrain warranty."
Anonymous A., MT (2020 GMC Sierra 1500 SLT 6.2-L V8)"Has used a quart to two quarts between oil changes since new. No reason for a new motor to consume oil like this. Dealership will not address. Look at prior motor issues from GM. They have admitted this same issues on a prior model."
Anonymous, TX (2020 GMC Sierra 1500 Denali 6.2-L V8)"Valve spring broke at approx 6,000 miles. Required 1 week in the shop. Cost was covered under warranty"
Anonymous, TN (2020 GMC Sierra 1500 AT4 6.2-L V8)
"AFTER BUYING HAD TRUCK 6 MONTHS THEN BLEW UP. TOLD MECHANICAL FAILURE,AND NOT INSTALLED PROPERLY."
Anonymous, (2020 GMC Sierra 1500 AT4 6.2-L V8)