This 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.
full bulletin at NHTSA ↗2021 GMC Acadia electrical problems
severe Owners of the 2021 GMC Acadia have filed 28 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Complaints
28
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2017 Acadia | 143 |
| 2018 Acadia | 70 |
| 2019 Acadia | 70 |
| 2020 Acadia | 21 |
| 2021 Acadia (this page) | 28 |
| 2022 Acadia | 10 |
| 2023 Acadia | 8 |
| 2024 Acadia | 7 |
| 2025 Acadia | 3 |
2crashes
1injury
What stands out
Owners have filed 28 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Electrical accounts for 19% of all owner complaints filed against this vehicle, across 9 categories tracked.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This 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.
full bulletin at NHTSA ↗This 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, Reduced Steering and/or Stabilitrak Message Illuminated on DIC, multiple DTCs.
full bulletin at NHTSA ↗This 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.
full bulletin at NHTSA ↗This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2021 Acadia shows a pattern of electrical failures starting early in ownership and often worsening over time.
Fuel pump control module failures are the most dangerous: the engine stops without warning while driving at highway speeds, sometimes multiple times on the same vehicle. When it happens, power steering and brakes are lost, the transmission locks in Park, and the car cannot be moved. Three owners report this happened to them more than once. One stalled on a rural curve at 55 mph with his 71-year-old wife alone in the car. Dealerships acknowledge this is a known, common problem and that the replacement part (GM #13554820) is not improved—it may fail again.
Instrument clusters black out randomly while driving, cutting off the speedometer and all gauges for seconds to minutes. Owners report this happening intermittently for years with no error codes, making diagnosis difficult. One owner traveled long distances unable to see speed or monitor advanced driver assistance systems.
Infotainment and radio systems fail, often tied to software update failures. Some owners report paying over $1,500 to replace the radio after a failed update. Backup cameras, hands-free calling, GPS, and OnStar safety features stop working as a result.
Electronic door locks malfunction, locking owners out. Electronic parking brakes set themselves. Voice-activated steering assist activates without input. Most of these issues cannot be replicated during dealer visits, leaving them unrepaired.
Complete electrical shutdown—where every system dies while driving—is reported as intermittent but extremely dangerous, leaving occupants stranded in traffic with no hazard lights or OnStar contact.
Same GMC Acadia electrical reports on nearby years: 2018 · 2019 · 2020 · 2022
Failure modes owners describe
Fuel Pump Control Module Failure
The fuel pump control module fails without warning, causing the engine to stall while driving or fail to start when parked. Vehicle becomes immobilized and cannot be shifted out of Park when engine is off. Owners report this occurs repeatedly on the same vehicle, sometimes three or more times.
When: 8,100 miles; 31,879 miles; 48,199 miles on affected vehicles; occurs both while parked and during driving at highway speeds
Symptoms owners cite: Engine stops without warning while driving; Vehicle will not start when parked; Transmission locked in Park when engine is not running; Power steering loss; Power braking loss; Check engine light (sometimes, not always); All dash warning lights stay on; Blown fuses
Codes mentioned: ECM fuel pump control module code (same code repeated on failures)
Repairs/costs cited: GM part #13554820 (fuel pump control module) replaced under warranty; dealership confirms full fuel system checked; service advisor acknowledged this is a known and common issue; part has not been updated and may fail again
Recalls/TSBs owners mention: GM aware of issue but has not issued a voluntary recall for 2021 Acadia despite recall issued for full-size GMC SUVs (NHTSA Campaign 21V739000); OnStar sends diagnostic alert stating 'ISSUE WITH THE ENGINE AND TRANSMISSION SYSTEM IN YOUR 2021 GMC ACADIA HAS BEEN DETECTED'
Instrument Cluster / Electronic Dashboard Failure
The electronic dashboard and instrument cluster black out or shut down completely while driving, then reboot. Loss of speedometer, gauges, and HUD display. Occurs randomly and intermittently with no error codes thrown. Related to software issues per GM TSB #21-NA-054.
When: 5,000 miles and beyond; starts happening early in ownership and continues intermittently for years (at least 2 years reported in some cases)
Symptoms owners cite: Entire instrument panel goes black while driving; Speedometer not visible; HUD display black; Radio screen shuts off; Gauges and warning lights not visible; System reboots itself; Lights affected; Adaptive cruise control may disengage; Auto-braking may disengage
Codes mentioned: No error codes thrown
Repairs/costs cited: Dealership charges $80 diagnostic fee for intermittent issues that cannot be replicated; software updates applied ($474.88 reported for IPC software update including 3.5 hours labor); entire instrument cluster replacement performed in some cases; no guarantee issue will not recur
Recalls/TSBs owners mention: GM TSB #21-NA-054 issued for software update; no recall issued despite affecting 2021-2023 models; software updates not provided at no charge; dealership refuses to address issue if no code is present
Infotainment System Failure / Software Update Failure
Infotainment system experiences SD card errors, software failures, and update failures. Radio and navigation systems fail or become inoperable. Related to over-the-air update failures affecting safety features.
When: Within 2 weeks to 2 months of purchase; occurs during rainy conditions (water intrusion suspected); ongoing for months to years
Symptoms owners cite: SD card error message; Radio screen shuts off randomly; Unable to connect to Bluetooth; Unable to connect to Android Auto; GPS/navigation not working; Backup camera not functioning due to system failure; Hands-free calling not working; OnStar crash detection not functioning; SOS features not working
Codes mentioned: SD card error
Repairs/costs cited: Radio completely replaced ($1,580.18 for new radio plus $221.32 diagnostic); software updates applied; internal infotainment system replacement needed per dealership (10+ hour diagnostic wait documented); system may need multiple visits
Recalls/TSBs owners mention: Some GMC models under recall for radio/infotainment update failure but 2021 Acadia not included in recall; GM engineers consulted but resolution takes months; dealership applies service bulletins for software updates
Backup Camera Malfunction
Backup camera stops working or works intermittently, displaying black screen with warning icons or failing to detect approaching vehicles. Failure occurs within weeks of purchase in some cases.
When: 2 weeks after purchase; within 30 days of purchase; intermittent throughout ownership
Symptoms owners cite: Camera stops working; Intermittent operation; Black screen display; Red warning triangle displayed; Fails to warn of approaching vehicles while backing; Fails to detect vehicles coming from side while backing
Codes mentioned: Camera system error
Repairs/costs cited: Camera unit replaced by dealership in some cases; infotainment system failure also affects camera function
Electronic Lock Malfunction
Door locks malfunction, causing the owner to be locked out or unable to lock the vehicle. Affects key fob operation, physical door button, and mobile app unlocking.
When: Multiple occasions throughout ownership; key fob not detected while driving
Symptoms owners cite: Unable to unlock vehicle with door button; Unable to unlock with key fob; Unable to unlock with mobile app; Back hatch opens but doors remain locked; Vehicle will not lock once in Drive; Key fob not detected message on panel while driving
Repairs/costs cited: Dealership unable to locate issue; unable to duplicate problem during service visits; no repair completed
Electronic Parking Brake Self-Activation
Electronic parking brake engages itself without driver input, even on flat surfaces. Occurs while vehicle is parked and stationary.
When: Within first 4,500 miles of ownership; October-November 2021
Symptoms owners cite: Parking brake sets itself on flat surface; No driver input to set brake
Repairs/costs cited: Dealership unable to address without error code; second dealer acknowledged issue is not normal but cannot determine cause; vehicle brought in 3 times with no resolution
Voice-Activated Assist Malfunction
Voice-activated steering wheel assist system activates without driver pressing the button. Occurs while driving on the road.
When: Within first 4,500 miles of ownership; October-November 2021
Symptoms owners cite: Voice activation assist goes off while driving; No steering wheel button pressed
Repairs/costs cited: Dealership unable to determine cause or provide fix; issue persists after multiple dealer visits (3 visits in 2 months)
Complete Electrical Power Loss
Vehicle experiences complete loss of electrical power while driving or parked, with all systems shutting down. Engine stops, OnStar unavailable, hazard lights unavailable, transmission locked in gear.
When: Intermittent, occurs multiple times over ownership period; one instance on rural road at 55 mph
Symptoms owners cite: Complete vehicle shutdown while driving; No power to OnStar; Hazard lights unavailable; Transmission locked in gear; Unable to restart vehicle; No warning before failure
Repairs/costs cited: Dealership unable to diagnose or confirm issue after multiple weeks in shop with GM assistance; vehicle towed each time
Check Engine Light and Related Engine Control Issues
Check engine light remains on for extended periods, especially during winter months. Associated with multiple component failures including purge pump, cooling fan, and thermostat.
When: Last 2 years of ownership; winter months specifically
Symptoms owners cite: Check engine light on for extended periods; Purge pump failure (multiple times); Cooling fan running after engine shutdown; Thermostat failing; Low power protection mode activating while driving
Repairs/costs cited: Owner anticipating out-of-pocket repairs; multiple component failures over time
Recalls/TSBs owners mention: Known issue that GM fails to include all VINs in recall coverage for 2021 model year
Cooling System Temperature Sensor Failure
Coolant temperature sensor intermittently fails, causing erratic readings and triggering reduced parking assist messages. Affects air conditioning operation.
When: October 2021 onwards; intermittent over time
Symptoms owners cite: Temperature sensor works then stops working; Reduced parking assist message; Air conditioning stops working when hot
IPC (Instrument Panel Cluster) Software Failure
The instrument panel cluster software fails, causing the IPC to go out while driving. Known issue in 2020+ GM models but no recall issued for 2021 Acadia.
When: Intermittent during driving
Symptoms owners cite: IPC goes out while driving; IPC comes back on
Repairs/costs cited: Software update applied by dealership; costs $189.99 diagnostic (first hour) plus 2.5 hours additional diagnostics tracing wiring, total repair cost $474.88; no guarantee against recurrence
Recalls/TSBs owners mention: Service bulletin available for dealership to perform software update; GM does not cover repair costs; known issue in 2020+ models with no recall for 2021 Acadia
Synthesized from 28 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
While driving down the interstate at 70mph+, the instrument panel went black and restarted multiple times. The car continued to stay at a sustained speed, but I was unable to control anything or see how fast I was going. It appears as if the car has shut off, but it isn't. It also affects the lights. It has happened multiple times with no known cause. When I brought this up at the dealership,…
Electronic parking brake is setting itself without you doing it even when parked on a completely flat surface. Voice activated assist is going off while driving down the road without you hitting the steering wheel button. 1st dealer I took the car to refused to even address issue because the car didn’t throw a code even though the parking break issue happened while in their parking lot. 2nd…
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…
My 2021 Acadia just stooped working as COMPLETLY SHUT OFF. I had no power to contact OnStar or more importantly to put my 4 ways(Hazard lights) on to signal or warn other motorists that there is a problem ahead. I could not push the vehicle as it is locked in gear because of the termination of power. I have had this exact problem happen 3 times leaving me and my family stranded on a busy road…
Had electrical trouble with your 2021 GMC Acadia?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2021 GMC Acadia?
It's a meaningful issue. 28 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Based on the 28 complaints filed, electrical issues most often appear around 31,400 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2021/GMC/Acadia.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.