# 2025 GMC SIERRA EV — ELECTRICAL SYSTEM
> NHTSA complaint `2261586` · 2026-10-28 · General Motors, LLC
## Severity
- **Deaths:** 0
- **Injured:** 1
- **Fire:** No
- **Crash:** No
- **Police report:** No
- **Medical attention:** No
- **Vehicle towed:** No
## Vehicle
- **Make:** GMC
- **Model:** SIERRA EV
- **Year:** 2025
- **Manufacturer:** General Motors, LLC
- **Component:** ELECTRICAL SYSTEM
## Narrative
Repeated failures on my 2025 GMC Sierra EV. The truck shows 'Service High Voltage Battery' and the high voltage battery makes a high-pitched hissing noise; it has thrown battery errors twice. The A/C has failed repeatedly; this summer a passenger in the truck overheated and suffered heat stroke because the A/C was not working. Super Cruise and other driver safety features consistently fail while driving. The GPS/telematics module has failed (GPS never finds a location). The truck was at Bob Howard GMC in Edmond, OK from [XXX] to [XXX] (repair order [XXX], 41 days) for the telematics module and A/C, and went back on [XXX] for the A/C and battery and is still in the shop. GM case number [XXX]. No crashes.  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
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*Source: [NHTSA ODI](https://www-odi.nhtsa.dot.gov/downloads/) · MORVS · CC0 1.0*