Recall 22V771 covers 797 2022-2023 Hummer EV Pickup and EV600 vehicles for battery-pack water intrusion. Free repair once GMC opens it.
GMC is recalling 797 2022-2023 Hummer EV Pickup and EV600 electric vehicles under recall 22V771 because the high voltage battery pack enclosure is not sealed correctly and water can enter the pack. Water accumulation can cause a loss of drive power and increase crash risk, and the Hummer dealer repair will be free once GMC opens it.
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What's wrong?
The high voltage battery pack in the 2022-2023 GMC Hummer EV Pickup and EV600 stores energy for the electric drive system. Its enclosure is the sealed case around the battery assembly, and it is supposed to keep water away from the cells, wiring, and onboard diagnostics while the vehicle is driven or parked.
On affected vehicles, the enclosure seal is the weak point. GM traced the problem to battery pack tray flanges that were not properly primed or electrocoated, plus repaired urethane seals that did not bond correctly during assembly. When that seal does not adhere, water can enter the pack. Water inside the pack can trigger a battery pack malfunction, keep the vehicle from starting, or cause loss of propulsion while driving.
The warning signs are electrical, not mechanical. Malfunction indicator lamps can illuminate, and the driver information center can show a battery pack warning message.
Who's affected?
Covers 2022 and 2023 Hummer EV Pickup vehicles, plus 2022 Brightdrop EV600 vans, all using the same high-voltage traction battery.
| 2023 GMC Hummer EV Pickup | high-voltage traction battery |
|---|---|
| 2022 Brightdrop EV600 | high-voltage traction battery |
| 2022 GMC Hummer EV Pickup | high-voltage traction battery |
| Units affected | 797 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific vehicle.
What's the safety risk?
Water inside the high voltage battery pack can trigger a battery malfunction and loss of drive power, increasing crash risk. If warning lamps appear or the driver information center shows a battery warning, treat it as a reason to contact the dealer before more driving. Repair will be free at any franchised Hummer dealer once GMC opens it.
What should I do?
- Check your VIN to confirm your 2022-2023 GMC Hummer EV Pickup or EV600 is included in this recall.
- Wait for the second owner letter before scheduling the final battery-pack enclosure repair; the remedy is still under development.
- Contact a franchised Hummer dealer to ask whether interim guidance applies to your VIN.
- Avoid driving through standing water until the dealer repair is complete, since water can enter the high-voltage battery pack and cause loss of drive power.
- Call GMC customer service at 1-888-987-4377 with questions and reference recall number 22V771 when you call.
What happens at the repair
At the dealer, a Hummer technician will handle the final replacement once GM opens the remedy. GM has not released the final repair procedure yet, so this interim stage does not mean the completed dealer repair is ready to schedule. Second letters will be sent once the remedy is available. The final dealer repair will be free once it opens. Out-of-pocket repairs already paid are handled through the existing warranty, not through a separate reimbursement program, because all covered vehicles are under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| October 13, 2022 | NHTSA published the recall |
|---|---|
| October 13, 2022 | Dealer notification began |
| October 13, 2022 | Dealer notification ended |
| April 13, 2023 | Owner notification mailed |
| April 28, 2023 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| April 28, 2023 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 22V771?
Recall 22V771 covers 797 2022-2023 GMC Hummer EV Pickup and BrightDrop EV600 electric vehicles. The high-voltage battery pack enclosure was not sealed correctly, which lets water enter the pack. Water inside the pack can cause loss of drive power and increase crash risk.
What should I do if my 2022-2023 GMC Hummer EV Pickup or BrightDrop EV600 is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 22V771. If it is, contact a franchised Hummer service dealer or BrightDrop support and reference GM recall number N222380031. The final remedy is still under development, so ask what interim guidance applies to your vehicle.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to provide the recall remedy at no cost. For recall 22V771, the final repair is still under development. Once GMC opens the remedy, parts and labor for the recall repair are covered.
What is the safety risk?
The safety risk is loss of drive power while driving. In recall 22V771, water accumulation inside the high-voltage battery pack can interrupt propulsion and increase crash risk. If your VIN is included, ask the service desk whether your vehicle has any interim inspection or driving guidance before the final remedy opens.
When were owners notified about recall 22V771?
Owner notification letters were mailed April 13, 2023. GMC said second letters will be sent once the final remedy is available. If you bought the vehicle used or never received a letter, check your VIN and reference recall 22V771 when you contact service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/22V771000 |
|---|---|
| GMC customer service | 1-888-987-4377 |
| NHTSA recall # | 22V771 |
| NHTSA recall # (full) | 22V771000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Misc. Document (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →