Two problems related to engine failure have been reported for the 2020 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 GMC Sierra 1500 based on all problems reported for the 2020 Sierra 1500.
My 2020 GMC sierra denali experienced a complete engine failure in June of 2024. Dealer repair was in excess of $7,700. 00. They stated they knew this was going to happen at about the 70,000 mile mark as they have fixed many in that same time. Repair resulted in rod replacement and cam shaft damage and replacement.
The engine failed at 5100 miles and is currently being repaired by the dealership. I requested a new car replacement.