At A Glance
- This warning affects:
- Owners and lessees of certain GM vehicles equipped with a 10-speed transmission, including the Chevy Tahoe, Chevy Silverado and GMC Sierra
- What is going on?
- Drivers of some GM vehicles have reported experiencing problems with their cars’ 10-speed transmissions, and lawyers are investigating whether a class-action lawsuit could be filed on their behalf.
- What kind of problem?
- Hard or irregular shifting; loss of power; hesitating, rushing or jerking between gears; clunking or whining sounds; and trouble shifting into drive and reverse
- How could a lawsuit help?
- A class action lawsuit, if successful, could help drivers recover money for repairs and loss of vehicle value and potentially force GM to fix the problem.
- Which vehicles are under investigation?
- The full list, which includes select GMC, Chevy and Cadillac vehicles, is below.
- What can you do
- Fill out the form on this page to share your story. An attorney working with ClassAction.org can contact you directly to tell you more about how you can help the investigation.
Attorneys working with ClassAction.org want to hear from people who had problems with 10-speed gearbox in theirs GM vehicles.
Drivers of newer GM models including (but not limited to) Chevy Tahoes, Chevy Silverados, and GMC Sierras have complained of problems with their trucks’ transmissions—including hard shifts, loss of power, shuddering, hesitancy and trouble shifting into gear– and lawyers investigate whether the fault is to blame. If so, they could potentially file a class-action lawsuit on behalf of people who own or lease cars equipped with GM’s 10-speed transmission.
If you have experienced problems with your GM vehicle’s transmission, fill out the form on this page to get in touch. A lawyer can contact you directly to explain why you may owe money and how you can help the investigation.
Which vehicles are under investigation?
Lawyers are investigating whether the 10-speed gearbox in the following vehicles is experiencing problems due to a defect:
- 2018-2022 Chevrolet Tahoe
- 2019 Chevrolet Camaro
- 2017-2022 Chevrolet Camaro ZL1
- 2019-2022 Chevrolet Silverado
- 2019-2022 Chevrolet Suburban
- 2019-2022 GMC Sierra
- 2018-2022 GMC Yukon Denali
- 2018-2022 Cadillac Escalade
- 2019-2020 Cadillac CT6
- 2020-2022 Cadillac CT4
- 2020-2022 Cadillac CT5
Transmission problems reported online
GM drivers have taken to online forums to voice complaints about the 10-speed transmission in their vehicles. Below is a selection of some of their online complaints [sic throughout]:
I have a 2019 GMC Sierra 6.2L Denali, 10 speed transmission, with 36K miles on the truck. I have recently noticed when the truck decelerates more than 20 mph, and if I accelerate, I hear a single clicking noise from the transmission as soon as I start to accelerate. It’s like the transmission isn’t ready to go into the lower gear and is going into gear to accelerate. There is no lag in acceleration that I can tell, but there is a noticeable metal-on-metal knocking or thumping sound. Once in gear it accelerates as normal, and there are no other sounds. This will only happen after the truck has been warmed up for 10+ min and does not happen if I decelerate less than 18-20 mph. It doesn’t happen as often if I use the brakes to brake. And if I come to a complete stop it doesn’t happen and will only happen if the truck is already moving over 10mph or so…”
— Ross C., GM-Trucks.com
I have had several German made diesel vehicles. They were all spectacular. I decided to buy a 6 Cyl Chevrolet and couldn’t be more disappointed. I bought it in November 2019 and it has been in the shop about 4 times for several issues, mainly, check engine light, heavy knocking (feels like you ran over a telephone pole at 70 MPH) Leaking oil, etc.”
— JP, Edmunds.com
First, I would like to start by saying that I wish I had chosen a different brand of truck. Way too many problems to list but the most important and noticeable ones are with the transmission. The way it shifts, the way it feels, I mean everything is off with this junk. Not a fun truck to drive at all! When you stop, it feels like you are facing backwards and it is simply annoying. It sucks because these are the issues I was trying to avoid by going with this brand and taking the bullet and paying the extra money for what should be a quality car. I was wrong…”
— Mr. F, Edmunds.com
Going on my fifth visit. The gearbox slips badly, especially at lower speeds. Spins than hits the gear. Stay away from gm[.]”
—Gregory C., Edmunds.com
Bought a 2021 AT4 with 3.0L Duramax. Ordered it and waited 4 months for it to arrive. Love the drive and the engine. Had to be towed to dealer at 1,236 miles due to a “transmission module problem”. For 3 days I have not heard anything. Think the transfer may have gone through. Wouldn’t go into reverse, would go into reverse but wouldn’t move. Engine power was reduced and the check engine light came on. The 10-speed gearbox was supposed to be solid…be careful”
— Let Down, Edmunds.com
I purchased a 2021 GMC Sierra 1500 AT4 6.2L V8 brand new at the end of July 2021. At about 18,000 miles the truck started jumping/jumping much like an old manual transmission when you first learn to drive it. I took it to the local dealer 3 different times between 18k-29k miles with no help. They kept saying, “it has tons of warranty left. Just drive it until it gets worse.” I replaced it today. I had the 6.2L NOT the 5.3L. It wasn’t an option here when you submitted your review.”
— Alex, Edmunds.com
How can a class action help?
A class action lawsuit can help drivers recover some of the money they spent on repairs and compensate them for loss of vehicle value. It could also force GM to recall the vehicles and fix the affected transmissions.
What can you do
If you have had problems with the 10-speed transmission on your GM vehicle, fill out the form on this page to share your story.
Your experience can help the attorneys file a class action lawsuit. There is no cost to get in touch and you are under no obligation to take legal action after talking to someone about your rights.