Recall 24V320 covers 10 2024 GMC, Chevrolet and Cadillac EVs with rear-drive-unit wiring that can cut power. Repair is free at a franchised Hummer dealer.
GMC is recalling 10 2024 Hummer EV Pickup, Silverado EV, Blazer EV, Lyriq, and Sierra EV vehicles under recall 24V320 because rear drive unit motor wires can contact each other and cause a loss of drive power. That loss of power increases crash risk, and a Hummer dealer will complete the free repair.
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What's wrong?
The rear drive unit is the electric motor assembly that turns battery power into movement at the rear wheels. Inside that unit, the stator uses tightly wound wires to create the magnetic force that helps spin the motor. These 2024 Hummer EV Pickup, Silverado EV, Blazer EV, Lyriq, and Sierra EV vehicles depend on that wiring staying insulated from nearby wires.
On affected vehicles, the supplier did not apply enough varnish insulation to some stator wiring during motor assembly. That varnish is the protective coating that keeps wires separated inside the motor. Without it, wires in the stator can touch each other, which can shut down propulsion and cause a loss of drive power.
There is no warning sign before failure. The vehicle can lose propulsion without a prior message, sound, or change in how it drives.
Who's affected?
Covers 5 EV models, with each model listed for the electric propulsion system and wiring tied to the same stator assembly.
| 2024 GMC Hummer EV Pickup | electric propulsion system |
|---|---|
| 2024 GMC Hummer EV Pickup | wiring |
| 2024 Chevrolet Silverado EV | electric propulsion system |
| 2024 Chevrolet Silverado EV | wiring |
| 2024 Chevrolet Blazer EV | electric propulsion system |
| 2024 Chevrolet Blazer EV | wiring |
| 2024 Cadillac Lyriq | electric propulsion system |
| 2024 Cadillac Lyriq | wiring |
| 2024 GMC Sierra EV | electric propulsion system |
| 2024 GMC Sierra EV | wiring |
| Units affected | 10 |
| 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 your specific vehicle is included in this recall.
What's the safety risk?
A loss of drive power increases the risk of a crash because the vehicle can no longer respond normally to accelerator input. If your VIN is included, schedule the rear drive unit replacement soon and drive cautiously until the repair is complete. Repair is free at any franchised Hummer dealer.
What should I do?
- Check your VIN to confirm your 2024 Hummer EV Pickup, Silverado EV, Blazer EV, Lyriq, or Sierra EV is included in this recall.
- Contact a franchised Hummer dealer to schedule the free rear drive unit replacement that fixes the wire-insulation fault behind the possible loss of drive power.
- Bring the recall notice if you have it. If not, reference recall number 24V320 and GM recall N242447080 when you call.
- Drive cautiously until the repair is complete, and contact the dealer promptly if the vehicle loses drive power.
- Call GMC customer service with questions, and use the customer service number listed for your brand in the owner notice.
What happens at the repair
At the dealer, a Hummer technician replaces the rear drive unit covered by recall 24V320. The repair addresses the rear drive unit electric motors and their insulated wires, and parts and labor are covered under the recall. Out of pocket repairs already paid are handled through the existing warranty, not through a separate reimbursement program, because the covered vehicles are under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| May 9, 2024 | NHTSA published the recall |
|---|---|
| May 9, 2024 | Dealer notification began |
| May 9, 2024 | Dealer notification ended |
| May 16, 2024 | Owner notification mailed |
| June 24, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| June 24, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V320?
Recall 24V320 covers 10 2024 GMC Hummer EV Pickup, Silverado EV, Blazer EV, Lyriq, and Sierra EV vehicles with rear-drive-unit motor wires that can contact each other and cause a loss of drive power. Dealers will replace the rear drive unit for free.
What should I do if my 2024 GMC Hummer EV Pickup, Silverado EV, Blazer EV, Lyriq, or Sierra EV is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 24V320. If it is, contact a franchised dealer for your vehicle brand and schedule the rear drive unit replacement. Reference recall number 24V320 or GMC recall number N242447080 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and dealers will replace the rear drive unit free of charge. Parts and labor are covered for vehicles included in recall 24V320.
What is the safety risk?
The safety risk is loss of drive power while the vehicle is in use. GMC reported that insufficient insulation inside the rear drive unit lets motor wires contact each other, which can stop propulsion and increase crash risk. The dealer repair replaces the rear drive unit.
When were owners notified about recall 24V320?
Owner notification letters were mailed May 16, 2024. If you bought the vehicle used or never received a letter, the VIN decides whether the recall applies. Check your VIN, then call the dealer with recall number 24V320 if your vehicle is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V320000 |
|---|---|
| GMC customer service | 1-800-222-1020 |
| NHTSA recall # | 24V320 |
| NHTSA recall # (full) | 24V320000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notice (PDF)
- Download Misc. Document (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (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 →