One problem related to automatic transmission control module has been reported for the 2017 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2017 GMC Sierra 1500 based on all problems reported for the 2017 Sierra 1500.
The contact owns a 2017 GMC Sierra 1500. While the contact's husband was driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the rpm increased, and the drive signal flashed on and off. The vehicle was driven to the shoulder of the roadway. The vehicle was taken to an independent mechanic where it was diagnosed with transmission control module (tcm) failure. The contact was informed that the transmission control module needed to be replaced. The vehicle was not repaired. The vehicle was towed to the residence. The contact requested a second opinion from another independent mechanic, and it was confirmed as a transmission control module (tcm) failure. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA hotline to report the failure. The failure mileage was approximately 137,000.