Vehicle Data Hub

2021 GMC Acadia electrical system problems

39 complaints about electrical system have been filed for the 2021 GMC Acadia, which is 17% of all its NHTSA complaints. It is the most reported problem area for this model year.

At a glance

Complaints
39 17% of this year's complaints
Crashes and fires
4 and 0
Injuries and deaths
2 and 0

Source: NHTSA owner complaints

What the data shows

These complaints mention 4 crashes, 2 injuries.

What owners wrote

The contact owns a 2021 GMC Acadia. The contact stated that while driving at 30 MPH, traffic stopped abruptly, and the brake pedal was depressed to the floorboard; however, the vehicle continued to accelerate while the Forward Collision Avoidance warning feature activated with a red warning light on the instrument panel. The contact attempted to steer off the road to avoid a collision; however, the vehicle crashed into the vehicle ahead, resulting in a three-vehicle collision.

Reported at 64,000 miles, October 2026 CrashInjury

Odometer Fraud. The contact purchased a 2021 GMC Acadia. The contact discovered a mileage discrepancy after the purchase. The vehicle was a dealer sale. At the time of purchase, the mileage was approximately 29,000. The contact attempted to trade in the vehicle, and the purchasing dealer checked the VIN and retrieved a Carfax Report. The Carfax Report indicated that the mileage on the Title on 11/04/2024 was 58,000; however, on 02/04/2025, the mileage was 28,000, and the vehicle had been in an accident in the past.

Reported at 58,000 miles, January 2026

Other problems reported for the 2021 GMC Acadia

Electrical system problems in other years

Electrical system problems across all GMC models