2014 GMC Sierra 1500: shudder or vibration when accelerating

Filed Aug 3, 2026 · Transmission · IN

I am experiencing ongoing issues with the 6L80E transmission that have significantly affected the performance and reliability of my vehicle. The transmission shifts harshly between gears, hesitates when accelerating, and occasionally slips before engaging. There is also a noticeable shudder during acceleration and inconsistent shifting, especially at lower speeds. These problems have become more frequent over time and raise concerns about the safety and dependability of the vehicle. The transmission does not operate as expected for normal driving conditions, and the issues negatively impact the overall driving experience. I am requesting a thorough inspection of the transmission, an explanation of the cause of these issues, and an appropriate repair or resolution to restore the vehicle to proper working condition.

Filed Sep 10, 2020 · Transmission · 87,000 miles · NJ

Driving down the highway one day around 65mph the vehicle began to shudder violently, reducing my speed to less than 45mph all the way home (all the while still shuddering) I took it to a well known transmission shop "whitty transmissions" in oak ridge nj only to have them drop the pan and find the transmission flooded with metal chips costing me a $3900+ rebuild. My transmission failed at 87,000 miles

Filed Feb 18, 2020 · Transmission · 150,000 miles · WV

Tl* the contact owns a 2014 gmc sierra 1500. The contact stated taht while driving approximately 75 MPH, the vehicle started to shudder. No warning indicators were illuminated. The vehicle was taken to an independent mechanic, where it was determined that the transmission needed to be rebuilt. The contact stated that the vehicle was taken to yes chevrolet located at 200 saturn way, hurricane, wv, 25526, for an oil change a week prior to the failure where the contact was informed that there were no additional issues with the vehicle. The manufacturer was not notified of the failure. The vehicle was not repaired. The approximate failure mileage was 150,000. Vin not available.

Filed Jan 2, 2020 · Engine · 408 miles · CA

Tl* the contact owns a 2014 gmc sierra 1500. The contact stated that the vehicle stalled after depressing the accelerator pedal without warning. The contact took the vehicle to simpson buick gmc of buena park (6600 auto center dr, buena park, ca 90621) for an oil leak and the gasket was replaced. Afterwards, the vehicle would shudder when reversing at a low rate of speed. There were no warning indicators illuminated. The contact took the vehicle back to the dealer to be serviced; however, the failure could not be duplicated. The manufacturer was notified and did not assist. The vehicle had not been repaired. The failure mileage was 408.

Filed Sep 17, 2015 · Transmission, Wheels · 140 miles · FL

Vehicle has shudder, wobble and vibration when being driven at speeds 40-80. Gmc has diagnosed as a tire issue but vehicle has been seen 14+ times and tires have all been road force balanced, numerous times. Gmc refuses to diagnose further and has not identified the cause of the problem. Vibration has affected other components. Commonly reported problem affecting 2014 gmc sierra trucks based on internet search.