Table 1 shows nine common engine and engine cooling related problems of the 2021 GMC Sierra 1500. The number one most common problem is related to the engine and engine cooling (278 problems). The second most common problem is related to the engine cooling system (seven problems).
While driving, the vehicle experienced a sudden and momentary loss of power, similar to briefly applying the brakes, after which power resumed. This was followed by a progressively louder squealing noise. Read details...
The contact owns a 2021 GMC Sierra 1500. The contact stated that while the vehicle while operating the vehicle a knocking noise was present coming from the engine and the check engine warning light had remained illuminated. Read details...
Traveling on interstate going at the posted speed limit and turned off the interstate onto my exit turn and vehicle engine started knocking and engine shut off oil warning light came on all while trying to stop the vehicle at the cross traffice stop sighn and ended up stopped in the middle of Read details...