2022 GMC Sierra 2500HD: Electrical System complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 12 owner complaints for the 2022 GMC Sierra 2500HD that list the electrical system component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11748443 (filed 07/06/2026): “The contact owns a 2022 gmc sierra 2500. the contact stated while driving at various speeds and pulling a 10,000 pounds trailer, the vehicle experienced an intermittent loss of trailer brakes. the message "check trailer wiring" and another message pertaining to the trailer brake system were displaye…”
- NHTSA complaint ODI #11735839 (filed 05/05/2026): “My 2022 gmc sierra 2500hd was previously repaired under gm safety recall n232426400 / nhtsa recall 24v060 for the power-unlatching tailgate switch, which can fail from water intrusion. the recall repair was completed and the recall now shows as closed. recently, the same tailgate switch problem occ…”
- NHTSA complaint ODI #11705037 (filed 12/15/2025): “Odometer fraud. the contact purchased a 2022 gmc sierra 2500. it was discovered that there was a mileage discrepancy. the vehicle was a dealer sale. at the time of purchase, the vehicle mileage was 92,000, and at the time of registration, it was discovered that the mileage was 98,325. the carfax rep…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Moderate
Finding and splicing chewed wiring is doable with a multimeter and patience but can be time-consuming; harness replacement is pro work. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
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