2012 GMC Acadia: engine and transmission complaints
ELEVATED COMPLAINT SIGNAL
37%
91 of 244 relevant owner complaints are about the engine, transmission or fuel system
37% of relevant owner complaints on the 2012 GMC Acadia are about the engine, transmission or fuel system. That is elevated. Worth an independent inspection before you commit to one.
Better than 58% of the 1,230 model years we track (2010–2023).
Excludes 58 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 30%).
The percentage is each model year's drivetrain complaint share. No elevated signal describes the model year, not any one car; a well-kept example of a flagged model can still be the right buy, and any of these still needs an inspection.
What owners reported
POWER TRAIN,ENGINE05/21/2026
The contact owns a 2012 GMC Acadia. The contact stated that the vehicle failed to release from low gear while at a stop. The transmission was backed up. The engine light was illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, who confirmed there we…
ENGINE08/25/2025
The contact owns a 2012 GMC Acadia. The contact’s wife stated that while driving at an undisclosed speed, the vehicle lost motive power with the check engine warning light illuminated. The vehicle was able to be restarted; however, the failure persisted. The vehicle was towed to the dealer, but was not diagnosed or rep…
POWER TRAIN08/18/2025
The transmission has all the symptoms of a broken wave plate and/or torque convertor as reported in the first generation T75 transmission service bulletin. This started occurring at 120K. I know the service bulletin was for the 2007-2009 models but the 2012 had the same exact transmission and waveplate. The car feels l…
Three of 91 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.
Recall campaigns on this model year (5)
SEAT BELTS
General Motors is recalling certain model year 2009-2014 Buick Enclave vehicles manufactured April 14, 2008, through May 14, 2014, Chevrolet Traverse vehicles manufacture…
STRUCTURE:BODY:HATCHBACK/LIFTGATE
General Motors LLC (GM) is recalling certain model year 2008-2012 Buick Enclave vehicles manufactured January 3, 2007, to February 29, 2012, 2009-2012 Chevrolet Traverse …
AIR BAGS:SIDE/WINDOW
General Motors LLC (GM) is recalling certain model year 2008-2013 Buick Enclave and GMC Acadia and 2009-2013 Chevrolet Traverse and 2008-2010 Saturn Outlook vehicles. In…
This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.
Before you buy a 2012 GMC Acadia
Ask the seller whether the transmission has ever been repaired or replaced, and whether the car has shown shuddering, slipping, delayed or harsh shifts, or a whine at speed.
Drive it from a cold start and long enough to warm up. Many transmission faults hide once the car is warm.
Get an independent pre-purchase inspection from a mechanic you choose, and tell them to focus on the transmission.
5 recall campaigns on this model year. Whether a specific car still has one open depends on the VIN; the report checks that.
Ask for service records. A transmission already replaced under warranty is a different car from one that was not.
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Experimental model-level information. This is not a vehicle inspection, vehicle-history
report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition
of any individual vehicle.
