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If you have a Chevrolet Silverado or another GM vehicle with a 10-speed transmission that’s failed, the wait to get it fixed could be months away.
Stephen Provenza on the 2025 Chevy Silverado & GMC Sierra Owners Facebook page says, I have a 2023 Chevy Silverado 1500 RST with 40,000 miles, a diesel engine, and a 10-speed transmission. It has been sitting at the dealer with a blown transmission for 90 days, waiting on a part. It needs a valve body, and it’s been in the shop since early May, all because of a stupid backordered part.
Is anyone else in the same situation?
A significant number of GM truck and SUV owners remain sidelined due to ongoing delays tied to a backorder on transmission valve bodies, a critical component of the automatic transmission system.
As GM Authority reported in March, the issue affects a swath of General Motors’ full-size, internal combustion-powered trucks and SUVs. Unfortunately, more General Motors truck owners are now reaching out to GM Authority stating that they’ve been waiting weeks and possibly even months for a fix, with no clear timeframe for when they can expect to get their vehicles back.
The Chevy Tahoe is another one of the GM vehicles affected by an ongoing transmission issue.
At the center of the issue is a potential failure in the transmission control valve body, which manages hydraulic circuits for gear shifts. This failure can cause a momentary rear-wheel lockup. The issue prompted General Motors to release Special Coverage N242454441 in November of 2024, providing affected vehicles with repair coverage for up to 15 years or 150,000 miles.
Nevertheless, vehicle owners continue to report long delays when it comes to receiving a fix, with some trucks and SUVs reportedly sitting on dealership lots for weeks or even months. We reached out to General Motors for an update on the issue:
“We’ve experienced some supply chain bottlenecks procuring parts, and the team is working hard to rectify the situation,” General Motors told GM Authority.
“Parts availability is greatly improving. We regret any delay for our customers and will be delivering the parts as soon as possible.”
The problem impacts ICE-powered vehicles produced for the 2019 model year onward, including:
- Chevy Silverado 1500
- Chevy Tahoe
- Chevy Suburban
- GMC Sierra 1500
- GMC Yukon
- GMC Yukon XL
- Cadillac Escalade
- Cadillac Escalade ESV
Affected vehicles are equipped with either the General Motors eight-speed automatic or the General Motors 10-speed automatic transmission, both of which may be susceptible to the control valve issue.
Some dealerships have opted for full transmission replacements in some instances.
One owner reported that after seven months without a resolution, General Motors authorized a complete transmission replacement to bypass the backlog on the valve body.
What is the problem with transmission on the 2023 Chevrolet Silverado with the diesel engine?
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The main problem with the 2023 Chevrolet Silverado 1500 and other GM trucks with diesel engines is a faulty transmission control valve that can lead to harsh shifting and, in rare cases, rear wheel lockup.
This issue is specifically related to the 10-speed transmission and can occur with both the 3.0L Duramax I6 and the 6.6L Duramax V8 engines. CBS News reports that a recall was issued for nearly 462,000 vehicles due to this problem.
Here’s a more detailed explanation:
Faulty Transmission Control Valve:
The transmission control valve is prone to excessive wear, which can cause a loss of pressure within the valve body. Harsh Shifting and Lockup:
This pressure loss can result in harsh shifting and, in some instances, a momentary lockup of the rear wheels, particularly when towing or under load.
NHTSA Recall:
According to CBS News, the National Highway Traffic Safety Administration (NHTSA) has documented complaints and issued a recall for these vehicles due to the potential for rear wheel lockup. Affected Models:
The recall includes the 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, and the 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL. Software Updates:
While GM has released software updates to address the issue, some owners have reported that these updates have not completely resolved the problem. Potential for Limp Mode:
Some owners have reported the vehicle entering “limp mode” due to the transmission issue. Backordered Parts:
There have been reports of extended wait times for replacement parts, such as valve bodies, due to high demand. Customer Satisfaction Program:
GM has also issued a Customer Satisfaction Program for certain 2023 Chevy Silverado 1500 units concerning transmission cases being out of specification. How long is the wait for Parts?
This issue with the 10-speed transmission and backordered parts is an ongoing concern, affecting vehicles from various model years, as reported in my report here.
- National Backorder: A national backorder on the necessary transmission control valve is causing delays for many customers across the country, according to GM Authority.
- Varying Wait Times: Reports indicate wait times for the parts range from several weeks to potentially a year, depending on the individual case and dealership inventory.
- Lack of Official Statistics: GM has not publicly released a specific number of customers currently waiting for parts. They acknowledge supply chain bottlenecks and state that they are working to rectify the situation, according to GM Authority.
Key points
A recall was issued in November 2024 for certain diesel trucks and SUVs with this issue, affecting nearly half a million vehicles.
A class action lawsuit, which alleges that GM knowingly sold hundreds of thousands of vehicles with defective transmissions, covering approximately 800,000 vehicles from 2015 to 2019, is currently ongoing. This lawsuit could have significant implications for GM and affected owners.
Conclusion
While there’s no precise figure, a significant number of GM customers are experiencing delays in getting their 10-speed transmissions repaired due to a shortage of the necessary parts.
Customers and Chevrolet Silverado owners like Stephen Provenza with the 10-speed transmission could be facing a significant wait.
How About You?
If you have a Chevrolet Silverado or another GM vehicle and are experiencing transmission issues, we want to hear from you. Click the red Add New Comment link below and share your story with us and other affected owners.
Check out my Chevrolet Silverado story: I Just Traded My 2020 Ford F-150 for a 2025 Chevy Silverado LT Trail Boss, But Now, I Hope I Made the Right Choice
I am Denis Flierl, a Senior Torque News Reporter since 2012. My 30+ year tenure in the automotive industry, initially in a consulting role with every major car brand and later as a freelance journalist test-driving new vehicles, has equipped me with a wealth of knowledge. I specialize in reporting the latest automotive news, covering owner stories, and providing expert analysis, ensuring that you are always well-informed and up-to-date. Follow me on X @DenisFlierl, @WorldsCoolestRides, Facebook, and Instagram
Photo credit: Denis Flierl
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Source: torquenews.com
