Table 1 shows three common power train related problems of the 2023 GMC Sierra 1500. The number one most common problem is related to the power train (66 problems). The second most common problem is related to the automatic transmission control module (three problems).
| Problem Category | Number of Problems |
|---|---|
| Power Train problems | |
| Automatic Transmission Control Module problems | |
| Automatic Transmission Fluid/lubricant Valves/valve Body problems |
I was driving down the road at 55 mph on 4/12/2026 and had let off the gas for a 45 mph zone when I experienced a violent downshift of the transmission that squealed the tires momentarily and felt like someone had hit me from behind. It startled me and caused me to lower my speed down to 20 mph. Read details...
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving uphill, the vehicle unexpectedly lost motive power. There was no warning light illuminated. The vehicle failed to restart and was towed to the dealer, where it was diagnosed, and determined that the engine block had Read details...
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving on several occasions at speeds above 30 mph, the vehicle shuddered abnormally. There was no warning light illuminated during the failures. Read details...