2025 GMC Hummer EV SUV Electrical system Problems
- Complaints
- 2about this part
- Share
- 29%of 7 total for the year
- Median mileage
- 2,300miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 2 complaints about the electrical system of the 2025 GMC Hummer EV SUV, 29% of the 7 complaints for this model year. Where a mileage was given, the median is 2,300 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“A little over a month after purchasing my brand new Hummer EV 2X I was driving and then I lost all power, brakes, steering, and had to coas t to a stop. My rear motor blew and snapped my trans axle. I had only 2,000 miles on the odo. This vehicle is riddled with issues that limit its ability to use safely.”
NHTSA complaint #11652236, filed 2025-04“The contact owns a 2025 GMC Hummer EV. The contact stated that while the vehicle was stationary, the brake pedal was depressed, and several unknown warning lights illuminated. The contact stated that while the vehicle was idling for several minutes, several unknown warning lights illuminated. The vehicle was then taken to a dealer where it was inspected by an engineer who stated that the system was extremely sensitive, and the dealer stated there was no additional assistance that could be provided. The vehicle was not repaired. …”
NHTSA complaint #11655036, filed 2025-04, 2,300 milesRelated service bulletins
- 11038684Oct 26, 2026Customer Satisfaction Program. Certain vehicles listed above may have a condition in which remanufactured high voltage battery packs were built using modules that were ineligible…
- 11030439Apr 1, 2026Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dealers are to inspect the RESS pack…
- 11024324Sep 4, 2025This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
- 11023367May 17, 2025This service bulletin provides Requirements for Replacement of the Dual Mode Cord Set Under Warranty.
- 11023484May 16, 2025This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
- 11023388May 15, 2025This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering…
- 11024498May 14, 2025This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.
- 11024496May 14, 2025This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
- 11024487May 14, 2025This service bulletin provides information on High Voltage Drive Motor Battery - TAC Approval and Exchange Program for BrightDrop, Chevrolet Silverado EV, and GMC Sierra EV…
- 11023365May 14, 2025This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 2 | 29% |
| 2024 | 5 | 42% |
Other parts of the 2025 GMC Hummer EV SUV
2 complaintsSteering
2 complaintsSuspension
2 complaintsEngine
1 complaintsFuel system
1 complaintsLane departure
1 complaintsSeat belts
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2025 GMC Hummer EV SUV
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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