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GMC · Known Issues

2026 GMC Hummer EV Problems: 1 Known Issue

2026 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2026 GMC Hummer EV has 1 documented issue, with 1 rated critical. The most serious is Front Passenger Airbag Harness Improper Wire Crimp Prevents Deployment (Recall 25V769) ($0-$0 repair). DIY maintenance guides at au7o.io.

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In This Article

  • Safety/Recalls1
  • FAQ

All 1 Known Issue

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On the 2026 GMC Hummer EV, gM recalled 2026 GMC Hummer EV Pickup and SUV vehicles because the front passenger airbag connection in the instrument-panel wiring harness may contain an improperly crimped wire. The defect traces to a three-day period in July 2025 when the supplier's (Yazaki North America) automated crimping equipment was down for maintenance and a manual backup crimping process produced inconsistent terminal connections. A bad crimp can interrupt or degrade the deployment signal to the passenger airbag, so the bag may not deploy in a frontal crash. Of the 354 total vehicles recalled, 109 are Hummer EV Pickups. Affected vehicles were built between July 31 and October 24, 2025. GM found the problem internally on August 21, 2025 when a loose wire was spotted during assembly; no field incidents or injuries were reported before the recall was filed.

Common Symptoms

  • Airbag readiness warning light illuminated
  • Passenger airbag status indicator reads OFF with an adult passenger seated
  • Stored SRS fault for the passenger airbag deployment loop
  • No symptom at all in some affected vehicles

How to Fix

A free recall remedy exists: under NHTSA campaign 25V769000 dealers install a jumper harness that replaces the affected section of the instrument-panel wire harness, at no charge. Because the defect can present with no dash warning at all in some cases, do not rely on the passenger airbag status indicator as proof the truck is unaffected - verify the VIN against the NHTSA recall lookup. If the airbag readiness light is on or the passenger airbag status shows OFF with an adult occupant seated, stop relying on that seat until the harness is inspected.

Typical repair cost:$0 - $0

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Frequently Asked Questions

What are the most common GMC Hummer EV problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2026 GMC Hummer EV has 1 documented issue. The documented issue is: Front Passenger Airbag Harness Improper Wire Crimp Prevents Deployment (Recall 25V769). Of these, 1 is rated critical and should be addressed promptly.

Is the GMC Hummer EV reliable?

The 2026 GMC Hummer EV has 1 known issue compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Front Passenger Airbag Harness Improper Wire Crimp Prevents Deployment (Recall 25V769). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common GMC Hummer EV problems?

Repair costs for known GMC Hummer EV issues range from $0 to $0, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Front Passenger Airbag Harness Improper Wire Crimp Prevents Deployment (Recall 25V769), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2026 GMC Hummer EV Front Passenger Airbag Harness Improper Wire Crimp Prevents Deployment (Recall 25V769)?

GM recalled 2026 GMC Hummer EV Pickup and SUV vehicles because the front passenger airbag connection in the instrument-panel wiring harness may contain an improperly crimped wire. The defect traces to a three-day period in July 2025 when the supplier's (Yazaki North America) auto… Repairs typically run $0-$0. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.