Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2014 GMC Acadia owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2014 GMC Acadia. The contact stated that while in park(P), the vehicle rolled, requiring the driver to turn off and restart the vehicle, and the vehicle successfully shifted in park(P). Additionally, the contact stated that while driving at various speeds, the vehicle jerked. The contact stated that while driving 60-65 MPH, the vehicle shut off, and the steering wheel and the wheels locked up. The contact was barely able to pull over to the side of the road, where the contact waited before restarting the vehicle. The contact stated that the Check Engine warning light was recently illuminated. The vehicle was towed to two independent mechanics, where several diagnostic trouble codes associated with the transmission and the transmission module and solenoid were retrieved. …
The contact owns a 2014 GMC Acadia. The contact stated that the vehicle was taken to the dealer for a routine inspection; however, the contact stated that she was informed by the technician that the vehicle failed to shift into gear as needed. The contact stated that she was informed by the technician that while shifted into reverse(R), the technician attempted to shift back into drive(D), but the vehicle failed to shift. No warning light was illuminated. The vehicle remained at the dealer and had not yet been diagnosed or repaired. The manufacturer was notified of the failure and the contact was informed that the VIN was not included in a recall. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 156,000.
The contact owns a 2014 GMC Acadia. The contact stated that the AWD warning light was illuminated. The contact received notification of NHTSA Campaign Number: 23V334000 (Air Bags); however, the part to do the recall repair was not yet available. The local dealer was contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure with the air bags. The failure mileage for the AWD failure was approximately 175,000. Parts distribution disconnect.
The contact owns a 2014 GMC Acadia. The contact stated that the vehicle failed to shift into Park. The contact stated that the key ceased in the ignition and would not allow him to shut-off the vehicle. The contact stated no warning light was illuminated. The vehicle was not taken to a local dealer nor independent mechanic to be diagnosed. The vehicle was not repaired. The contact was relating the failure to NHTSA campaign number: 14V092000 (Power train). The manufacturer had been informed of the failure and informed the contact that the Vin was not under recall. The failure mileage was approximately 106,000.
The contact owns a 2014 GMC Acadia. The contact stated while driving 75 MPH, several unknown warning lights illuminated. Additionally, the vehicle made an abnormal clunking sound and failed to exceed 40 MPH. The vehicle was towed to an independent mechanic an independent mechanic, where it was diagnosed and determined that the transmission had failed and needed to be replaced. The vehicle was towed to dealer, where the same assessment was made. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 159,000.
The contact owns a 2014 GMC Acadia. The contact stated while driving approximately 30 MPH, the transmission shifted with a loud thump. The contact stated that the vehicle was shaking and jerking while shifting gears. The contact stated no warning light was illuminated. The contact had taken the vehicle to a local dealer however, the mechanic was unable to determine the cause of the failure. The failure was intermittent. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 140,000.
My wife was driving at highway speeds (70MPH) on the interstate in Chicago when without warning her cluster lights appeared and her vehicle lost propulsion (stalled, Stall, died). She had no warning and the area had no shoulder for her to pull off into so she had to come to a complete stop in the right lane of the highway. People are doing speeds well above 70MPH, I would hate to think of what could have happened if a person or line of vehicles could not change lanes in time; very serious injuries and possibly death for all invovled. Fortunatly, she had the sense to put the car in park (highway lane) and completed a key cycle thus restarting the vehicle and then obviously accelerating quickly to get out of harms way. As people are swirving out of her lane and honking at her. I put our VIN into the NHTSA site and see the vehicle has no outstanding recalls. …
My 2014 GMC Acadia constantly displays "Service Stabilitrak," "Service Traction Control," ABS, brake, and check-engine warning lights. The vehicle will not accelerate past 40 mph under normal driving. Recently, the vehicle began showing "Engine Power Reduced" randomly without any warning, and the vehicle loses power suddenly. The OBD2 code P1682 (Ignition 1 Circuit/Relay failure) appears every time. This issue has caused the vehicle to jerk, lose acceleration, and even stall in the middle of an intersection during rush-hour traffic while my children were in the car, creating a serious safety hazard. These warnings and symptoms are constant, and the power-reduction events occur unpredictably. No official inspection has been completed by the manufacturer. The failed component is still in the vehicle and available for inspection. …
I have had the same problem for 3 years now and have taken my vehicle to a GM dealership many times for the same issue and it is definitely an issue . My car keeps throwing up TCM issue and ECM and I have asked for the modules to be checked. I have reasearched these issues and it seems to be the same with many vehicles like mine so that should be a red flag. My car will slow down, power reduce engine, traction control off, and my steering will be difficult and sometimes I can't even get off the road in time, which is very dangerous. I have seen recalls on electrical issues and wonder if my vehicle has damaged recall parts. I am a single mother who has to work and get my child to school and can't do so properly with my vehicle doing this all the time. It's very frustrating.
1.- Found water in the doors electrical connectors, the radio, alerts, blinkers sounds stops working and makes an electric short circuit sound. Informatic radio systems works on and off. 2.- break pedal with unusual play this make the stop lights turn on all the time and triggers the stabilitytrack system fails the car it's like speeding up and down. 3.- the previous problem play in the break pedal triggers a transmission malfunction Does not change gears and makes the engine loose power preventing a major damages but at same time it's very dangerous while driving because we never know when it will happen the failure.
Related recalls
Power train › Automatic transmission
General Motors LLC (GM) is recalling certain model year 2014 Buick Regal, LaCrosse, Verano, and Enclave, and Chevrolet Impala, Malibu, Cruze, and Traverse, and GMC Acadia vehicles equipped with automatic transmissions.
Remedy: General Motors will notify owners, and dealers will inspect and replace any affected transmission shift cable adjusters, free of charge. The recall began on April 10, 2014.
Transmission complaints in other Acadia years
Frequently asked questions
How common are transmission problems on the 2014 GMC Acadia?
NHTSA has 35 complaints about the transmission & drivetrain of the 2014 GMC Acadia, 8% of the model year's 463 complaints.
Is there a recall for 2014 GMC Acadia transmission problems?
Yes — NHTSA recall 14V-092 (automatic transmission, Feb 21, 2014). Recall repairs are free at authorized dealers.
At what mileage do 2014 GMC Acadia transmission problems start?
Half of the complaints with a recorded mileage happened before about 59,000 miles, and 40% before 25,000 miles.
Is it dangerous?
Owners linked 3 crashes, 0 fires and 4 injuries to transmission & drivetrain problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.