There are 4 owner-reported engine complaints for the 2015 GMC Acadiain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The engine is not shifting properly, and the vehicle loses speed while driving and hesitates to accelerate. At time, it feels as though the car is not moving at all. This issue has occurred on multiple occasions, affecting both me and my family, and has forced us to pull over because the vehicle could barely move forward. This happed once on the highway and almost caused an accident. Additionally, the check engine light remains on at all times.
TL* THE CONTACT OWNS A 2015 GMC ACADIA. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE STALLED IN THE MIDDLE OF THE ROAD WITHOUT A WARNING LIGHT ILLUMINATED. THE CONTACT RECEIVED ASSISTANCE FROM THE POLICE TO PUSH THE VEHICLE TO THE SHOULDER OF THE ROADWAY. THE CONTACT ATTEMPTED TO RESTARTED THE VEHICLE WHICH FAILED TO START. THE VEHICLE WAS TOWED TO D'ARCY BUICK GMC (2022 ESSINGTON RD, JOLIET, IL 60435, (815) 671-9010) WHERE IT WAS DIAGNOSED HOWEVER, THE MECHANIC WAS UNABLE TO DUPLICATE THE FAILURE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE HOWEVER, INFORMED THE CONTACT THAT NO FIX WAS AVAILABLE FOR THE VEHICLE. THE VEHICLE WAS TAKEN TO AN UNKNOWN DEALER AND THE CONTACT WAS INFORMED BY THE TECHNICIAN THAT THERE WAS NO FIX FOR THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 17,000.
TL* THE CONTACT OWNS A 2015 GMC ACADIA. THE CONTACT STATED THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT RESTARTED THE VEHICLE, BUT THE FAILURE RECURRED WHETHER DRIVING OR PARKED. THE CONTACT TOOK THE VEHICLE TO THE DEALER; HOWEVER, THE DEALER WAS UNABLE TO IDENTIFY THE FAILURE AND DIAGNOSE THE VEHICLE. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER STATED THAT FURTHER EVIDENCE REGARDING THE FAILURE WAS NEEDED. THE APPROXIMATE FAILURE MILEAGE WAS 18,860.
BAD SHIFTING IN TRANSMISSION WHEN YOU SLOW DOWN OR COME TO A STOP AND TURN RIGHT AND ACCELERATE AT THE SAME TIME. THIS HAPPENS ON THE 2014 AND 2015 MODELS, TRANMISSION WILL STUTTER AND ABRUPTLY SHIFT INTO A LOWER GEAR. ON THE ACADIA FORUMS IT IS DOCUMENTED BY OTHER OWNERS AS WELL (APPROX 30-50 OTHER OWNERS). THE TRANSMISSION NEEDS A REPROGRAM TO ACCOUNT FOR THIS ISSUE. GM APPEARS TO NOT BE DOING ANYTHING ABOUT THIS COMMON ISSUE.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026