Recall 24V839 covers 77,824 2022-2023 GMC Savana and Chevrolet Express vehicles for incorrect transmission control module software. Repair is free at any franchised GMC dealer.
GMC is recalling 77,824 2022-2023 Savana and Express vans because incorrect transmission control module software can cause harsh shifting, reduced power, unintended deceleration, rear wheel lockup, or movement in an unintended direction. Rear wheel lockup or unintended movement increases crash risk, and GMC dealers will complete the free repair.
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What's wrong?
The transmission control module on 2022-2023 GMC Savana and Express vehicles is the computer that manages automatic transmission shifts. It reads vehicle and transmission signals, then tells the transmission when to change gears and how much hydraulic pressure to use. Smooth shifting depends on the module using the correct software calibration.
On affected vehicles, the software is calibrated incorrectly for certain electrical failures inside the transmission. That bad calibration can set the wrong diagnostic trouble code, which sends the transmission into the wrong default response during shift operations. The result can be harsh shifting, reduced power, unintended deceleration, momentary rear wheel lockup while driving, or movement in an unintended direction at low speed.
Drivers can notice harsh shifting or periods of reduced propulsion before the failure behavior shows up. A "check engine" light can also appear, giving the dealer a diagnostic starting point for the transmission control module software.
Who's affected?
Covers 2022 and 2023 Savana and Express vans, all tied to the same transmission control module software.
| 2022 GMC Savana | automatic transmission |
|---|---|
| 2023 GMC Savana | automatic transmission |
| 2023 Chevrolet Express | automatic transmission |
| 2022 Chevrolet Express | automatic transmission |
| Units affected | 77,824 |
| 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 van is included in this recall.
What's the safety risk?
A transmission problem that locks the rear wheels or moves the vehicle in an unintended direction increases crash risk. A harsh shift, reduced propulsion, or a "check engine" light is a warning sign to slow down, avoid hard maneuvers, and schedule service soon. Repair is free at any franchised GMC dealer.
What should I do?
- Check your VIN to confirm your 2022-2023 GMC Savana or Chevrolet Express is included in this recall.
- Contact a franchised GMC or Chevrolet dealer to schedule the free transmission-control-module software update that corrects harsh shifting, reduced power, unintended deceleration, rear wheel lockup, or unintended movement.
- Bring the recall notice if you have it. If not, reference recall number 24V839 when you call.
- Drive cautiously until the software update is complete, and contact the dealer sooner if the van shifts harshly, loses power, decelerates unexpectedly, or tries to move in the wrong direction.
What happens at the repair
At the dealer, a GMC technician updates the transmission control module software calibration. The update corrects the control logic tied to harsh shifting, reduced power, unintended deceleration, rear wheel lockup, and unintended vehicle movement. Parts and labor are free under the recall. Out of pocket repairs already paid are handled through the existing vehicle 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
| November 7, 2024 | NHTSA published the recall |
|---|---|
| November 7, 2024 | Dealer notification began |
| November 7, 2024 | Dealer notification ended |
| December 9, 2024 | Owner notification mailed |
| December 23, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| December 23, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V839?
Recall 24V839 covers 77,824 2022-2023 GMC Savana and Chevrolet Express vehicles with incorrect transmission control module software. The software can cause harsh shifting, reduced power, unintended deceleration, rear wheel lockup, or unintended vehicle movement. Dealers will update the software calibration for free.
What should I do if my 2022-2023 GMC Savana or Chevrolet Express is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 24V839. If it is, contact a franchised GMC or Chevrolet dealer to schedule the transmission control module software update. Reference GM recall number N242471620 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and GM says dealers will update the transmission control module software calibration free of charge. Parts and labor are covered at a franchised dealer.
What is the safety risk?
The risk is a crash from rear wheel lockup or unintended vehicle movement. The recall is tied to transmission control module software that can cause harsh shifting, reduced power, unintended deceleration, rear wheel lockup, or movement in an unintended direction.
When were owners notified about recall 24V839?
GM mailed owner notification letters on December 9, 2024. If you bought the vehicle used or never received a letter, check your VIN to confirm whether your specific Savana or Express is included, then call a franchised dealer with recall number 24V839.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V839000 |
|---|---|
| GMC customer service | 1-888-988-7267 |
| NHTSA recall # | 24V839 |
| NHTSA recall # (full) | 24V839000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Document (PDF) (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
- Download Misc. Document (PDF)
- Download Owner Notice (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 19, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →