2021 GMC Acadia problems and complaints
Owners have filed 156 complaints with NHTSA about the 2021 GMC Acadia. The most-reported areas: Electrical System (40), Engine (30), Fuel/Propulsion System (26).
Key takeaways
- 156 owner complaints on file with NHTSA.
- 8 involve a crash, 0 a fire, 4 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 40 | 26% |
| Engine | 30 | 19% |
| Fuel/Propulsion System | 26 | 17% |
| Unknown Or Other | 21 | 13% |
| Steering | 18 | 12% |
| Service Brakes | 18 | 12% |
| Power Train | 17 | 11% |
| Air Bags | 10 | 6% |
| Forward Collision Avoidance | 7 | 4% |
| Vehicle Speed Control | 7 | 4% |
| Back Over Prevention | 7 | 4% |
| Lane Departure | 4 | 3% |
One complaint can name several components, so shares add up to more than 100%.
Parts for the 2021 GMC Acadia
GarageDex's verified specs for this car. Each Buy button searches Amazon for that exact part.
- Battery
- Engine oil
- Oil filter
- Engine air filter
- Cabin air filter
- Wiper blades
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2021 GMC Acadia SUV AWD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2021 GMC Acadia SUV FWD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Electrical System - filed 2026-10-29
Vehicle stalled several times. Check engine light and many code came up. Crack sensors replaced. Veh still stalls. Dealer and independent dealer believes it might be cpu. All wires from cpu checked with no issue found. When veh stalls if you manipulate the wire veh will start and run with demished power and demishe...
Steering,engine - filed 2026-10-25
Car was running great and mins later I get an error stating steering assist is reduced -Drive with care. Vehicles temperature gauge is stuck at cold and fans turn on after turning off the vehicle. I had the vehicle serviced at Dave White on Alexis Rd in Sylvania almost exactly a year ago for the same reason. Was told b...
Chest Clip, Buckle, Harness - filed 2026-10-16
The magnetic chest clip does NOT latch. It can easily be pulled apart by hand. It compromises my child’s safety tremendously by allowing the harness straps to slip off of her shoulders in event of a crash leading to a projected infant. Upon doing further research and posting in my moms group on facebook i’ve found c...
Diagnose it yourself
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
More for the 2021 GMC Acadia
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.