Table 1 shows three common power train related problems of the 2021 GMC Sierra 1500. The number one most common problem is related to the power train (134 problems). The second most common problem is related to the transmission solenoid (one problem).
| Problem Category | Number of Problems |
|---|---|
| Power Train problems | |
| Transmission Solenoid problems | |
| Transmission Failure problems |
The transmission overheats on this vehicle shutting the vehicle into “limp mode” this is extremely dangerous when at interstate/highway speeds and the vehicle slows it self down to a dangerously low speed and all other vehicles around are traveling at a high rate of speed, this has Read details...
Transmission failed, value body is listed by dealer as the cause. GMC is saying that my vehicle is not part of the recall, even though it is part of the same model, same years as well as the same problem, the value body on the transmission. Read details...
I own a 2021 GMC Sierra 1500 at4 with the 3. 0l duramax diesel. The vehicle developed severe transmission problems, including harsh/jerky shifting and a hard clunk when shifting into reverse. The vehicle was subsequently diagnosed with an internal transmission failure. Read details...