2025 GMC Hummer EV Pickup Electrical system Problems
- Complaints
- 6about this part
- Share
- 100%of 6 total for the year
- Median mileage
- —not reported
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 6 complaints about the electrical system of the 2025 GMC Hummer EV Pickup, 100% of the 6 complaints for this model year.
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.
“I was driving down the street and suddenly lost all motive Power, vehicle became difficult to control. I have a video. The car also made a grinding feeling and very loud whining noise”
NHTSA complaint #11682571, filed 2025-08“While traveling with my wife and two toddlers over the July 4th holiday weekend, the 12 volt battery on my 2025 GMC Hummer EV failed completely at approximately 7,500 miles and five months of ownership. The vehicle would not accept a jump start and was disabled where it sat, stranding my family. AAA installed a replacement 12 volt battery roadside at a cost of $600. Following the battery replacement, a Service High Voltage System warning appeared on the dash and remained on, and the air conditioning system stopped functioning entirely. …”
NHTSA complaint #11756547, filed 2026-08“While traveling with my wife and two toddlers over the July 4th holiday weekend, the 12 volt battery on my 2025 GMC Hummer EV failed completely at approximately 7,500 miles and five months of ownership. The vehicle would not accept a jump start and was disabled where it sat, stranding my family. AAA installed a replacement 12 volt battery roadside at a cost of $600. Following the battery replacement, a Service High Voltage System warning appeared on the dash and remained on, and the air conditioning system stopped functioning entirely. …”
NHTSA complaint #11756545, filed 2026-08“While traveling with my wife and two toddlers over the July 4th holiday weekend, the 12 volt battery on my 2025 GMC Hummer EV failed completely at approximately 7,500 miles and five months of ownership. The vehicle would not accept a jump start and was disabled where it sat, stranding my family. AAA installed a replacement 12 volt battery roadside at a cost of $600. Following the battery replacement, a Service High Voltage System warning appeared on the dash and remained on, and the air conditioning system stopped functioning entirely. …”
NHTSA complaint #11757089, filed 2026-08“While driving on a public road, the vehicle suddenly shut down and rebooted itself. Motive power was lost during the event. This has happened at least a dozen times during normal driving, including while transporting a child. Video of an occurrence was recorded. The vehicle is a 2025 GMC Hummer EV with approximately 10,400 miles and has been in service about eight months. This creates a serious safety risk. A sudden loss of propulsion and system reboot while moving can leave the driver unable to maintain speed or control in traffic and increases the risk of a crash. …”
NHTSA complaint #11759966, filed 2026-08Related 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…
- 11037980Oct 5, 2026Service Update. Certain vehicles listed above may enable the new King Crab Feature through OTA programming or programming at the dealer. Dealers will perform a comprehensive…
- 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…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 6 | 100% |
| 2022 | 3 | 50% |
Other parts of the 2025 GMC Hummer EV Pickup
2 complaintsFuel system
1 complaintsOther or unknown
1 complaintsBody and structure
1 complaints
← All problems reported for the 2025 GMC Hummer EV Pickup
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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