2021 GMC Acadia Electrical system Problems
- Complaints
- 39about this part
- Share
- 25%of 155 total for the year
- Median mileage
- 31,400miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 39 complaints about the electrical system of the 2021 GMC Acadia, 25% of the 155 complaints for this model year. Where a mileage was given, the median is 31,400 miles. 4 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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.”
NHTSA complaint #11715591, filed 2026-02, 58,000 miles“Vehicle purchased new mid-march 2021 and in less than 30 days the rear back-up camera stopped working intermittently. This has occurred several times and the vehicle is currently at the dealer being diagnosed.”
NHTSA complaint #11415501, filed 2021-05, 500 miles“On numerous occasions the key fob is not detected and locked out of vehicle. Key fob notice on panel saying it’s not detected while driving. Took it to Jim Causley GMC dealer several times and then they kept vehicle for a week unable to duplicate and sent me on my way. This is still happening with no help.”
NHTSA complaint #11656763, filed 2025-04“I got into an accident because my back up crap camera did not warn me that a car had turned behind me. Also when and backing up and a car is coming it doesn’t indicate the car is coming until it’s behind me. I’ve taken it to the dealer and they say there’s nothing wrong with it. Also there is no break when you come too close to something in front of you.”
NHTSA complaint #11463901, filed 2022-05“The infotainment center/and On Star alert systems ( crash detections / SOS ) No access to anything in the infotainments center along with most of the safety setting not alerting due to and over the air update failure. yes is available for inspection upon request. all On star safety features are not working if a crash were to happen i would not be able to get help if i was injured. Yes and it is ongoing. BY a GMC certified dealer. No.”
NHTSA complaint #11701600, filed 2025-11Related service bulletins
- 11019547Apr 22, 2025This service bulletin provides a procedure to test and replace the battery distribution fuse block if found the cause of the DTC and electric coolant pump inoperative.
- 11019017Apr 10, 2025This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
- 11017595Apr 3, 2025This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- 11017508Apr 3, 2025This service bulletin provides a procedure to add deadener to the batter tray bracket to correct customer concerns of a Service Engine Soon (SES), Reduced Power, Service Brake…
- 11017443Apr 2, 2025This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
- 11017244Mar 31, 2025The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
- 11017207Mar 21, 2025This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 11016948Mar 14, 2025This service bulletin provides repair information to correct a customer concern of Vehicle Will Lock and Unlock (Active Functions Work) but Will Not Crank or Start (Loss of…
- 11017035Mar 13, 2025This service bulletin provides repair information to correct a customer concern of Vehicle Will Not Lock and Unlock (Loss of Active Functions) Crank or Start (Loss of Passive…
- 11016946Mar 13, 2025This service bulletin provides repair information to correct a customer concern of No Crank, No Start, Quick Start/Stall, No FOB Detected, Key FOBs Inoperative, B3924 00, B3925…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 3 | 30% |
| 2025 | 4 | 6% |
| 2024 | 8 | 13% |
| 2023 | 10 | 20% |
| 2022 | 15 | 29% |
| 2021 | 39 | 25% |
| 2020 | 28 | 26% |
| 2019 | 106 | 27% |
| 2018 | 109 | 27% |
| 2017 | 193 | 27% |
| 2016 | 25 | 11% |
| 2015 | 28 | 12% |
| 2014 | 90 | 19% |
| 2013 | 38 | 28% |
| 2012 | 41 | 14% |
| 2011 | 47 | 17% |
| 2010 | 45 | 13% |
| 2009 | 47 | 14% |
| 2008 | 153 | 18% |
| 2007 | 57 | 13% |
Other parts of the 2021 GMC Acadia
30 complaintsFuel system
30 complaintsOther or unknown
22 complaintsBrakes
19 complaintsSteering
18 complaintsTransmission and drivetrain
17 complaintsAir bags
10 complaintsBack-over prevention (rear camera)
7 complaintsForward collision avoidance
7 complaintsVehicle speed control
7 complaintsLane departure
4 complaintsEngine cooling
3 complaints
← All problems reported for the 2021 GMC Acadia
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology