Chevrolet Express Transmission Software May Cause Unintended Movement

NHTSA campaign 24V839000 · Reported Nov 7, 2024 · General Motors, LLC

high How serious is it? About this label

Rear wheels locking up or the vehicle moving in a direction the driver didn't intend can make the vehicle harder to control, increasing the risk of a crash. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	24V839000
Reported to NHTSA	Nov 7, 2024
Manufacturer	General Motors, LLC
Part affected	Power Train:automatic Transmission:control Module:software
Vehicles covered	1 model/year combination, model years 2023
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

GM is recalling certain Chevrolet Express and GMC Savana vans because of incorrect software in the transmission control module. This software problem can cause harsh shifting, reduced power, the vehicle slowing down on its own, the rear wheels locking up, or the vehicle moving in a direction the driver did not intend.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your vehicle is included.
2. Contact a Chevrolet dealer to schedule the free software update; you can also call Chevrolet customer service at 1-800-222-1020.
3. The transmission software update is free of charge.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 24V839000. More in how recalls work.

Affected vehicles (1)

2023 Chevrolet Express

Who to contact

Chevrolet — official Chevrolet recall lookup

Customer service: 1-800-222-1020

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Chevrolet Power Train Recalls Cover Drive Loss and Wheel Lockup · all 15 Chevrolet recalls in this area

Official notice

Component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
Summary: General Motors, LLC (GM) is recalling certain 2022-2023 Chevrolet Express and GMC Savana vehicles. Incorrect software in the transmission control module (TCM) may result in harsh shifting, reduced power, unintended deceleration, rear wheel lockup, or cause the vehicle to move in an unintended direction.
Safety risk: Rear wheel lock-up or moving in an unintended direction can increase the risk of a crash.
Remedy: Dealers will update the transmission control module software calibration, free of charge. Owner notification letters were mailed December 9, 2024. Owners may contact GM customer service at 1-888-988-7267, Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N242471620.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.