GM Releases Fix For 2022 GMC Sierra Poor Transmission Shift Quality
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GM has released a new service update for the 2022 GMC Sierra 1500 in regard to poor shifting quality from the truck’s automatic transmission.
The problem: certain units of the 2022 GMC Sierra 1500 may exhibit a condition wherein the automatic transmission provides poor-quality shifts. What’s more, the pickup’s Malfunction Indicator Lamp (MIL) may also be illuminated.
The hazards: there are currently no known safety hazards related to this service update.
The fix: to address this automatic transmission shifting issue, GM has instructed technicians to replace the GMC Sierra 1500’s transmission control module. Additionally, the related software may need to be reprogrammed as well.
Affected components: transmission control module.
Affected vehicles: certain units of the 2022 GMC Sierra 1500. Note that this service update applies to fully refreshed 2022 GMC Sierra 1500 unveiled in October of 2021, as opposed to the pre-refresh 2022 GMC Sierra 1500 Limited. It should also be noted that this service update also applies to certain units of the refreshed 2022 Chevy Silverado 1500.
Number of affected vehicles: it’s currently unknown how many units of the refreshed 2022 GMC Sierra 1500 are affected by this particular service update.
Owners should: owners can contact GMC directly with any concerns they may have using the contact information listed below.
Contacts:
- GM Service Update number: N222383250
- GMC U.S. Customer Service: 1-800-462-8782
GM is instructing dealers to ensure that any vehicle that is subject to this service update and still covered under the New Vehicle Limited Warranty, including those that enter vehicle inventory or dropped off for service, must receive the service update correction before it is released or sold. Any vehicle that is subject to this service update must be inspected and repaired prior to customers take possession of the vehicle, while involved vehicles cannot be delivered to customers, traded, released to auction, or used for demonstration purposes.
As a reminder, the refreshed 2022 GMC Sierra 1500 is available with both the GM eight-speed automatic transmission (RPO code MQE) and GM 10-speed automatic transmission (RPO code MQB). It’s unclear at this time if this service update applies to one or both transmissions.
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8 speed looking pretty good right now 🙃
Why can’t gm figure out their transmission issues and fix them for good? This isn’t a new problem. Been going on for years!
This does seem to be a recurring problem for them.
I think part of it is people are looking for them. Even these “poor quality” shifts are smoother than what you would get in a Tacoma. All are smoother than the 4,5 and six speeds of before.
Both of my friends owners of 2020and 2021 Serria 1500 with 10 gear transmissions and the 5.3 engine have had their engines fail from the lifters going bad then one that had been repaired then had transmission issues as mention in this report. Believe me if it starts happening to your transmission you’ll know for sure and you will know that it’s an issue that has nothing to do with comparison to the Canyon or any other GMC vehicle.
The article does not say which tranny is at fault. It could be the 8 speed in the 4 banger.
Thanks for the update. I have a 2019 GMC and the transmission jerks into gear and sometimes flutters going from first to second and visa versa. I absolutely love everything else about this vehicle and thinking I would purchase another later model, but this won’t happen until I read positive results on this issue. Unfortunately my vehicle is the six speed one and this is common from what I researched. Hope they fix this or I will look elsewhere.
I also have a 2019 GMC Sierra 1500 and have the same problems at times lunging forward, or a huge boom when shifting from reverse to drive. I almost thought someone smashed into me when this happened it was so loud and forceful. GM needs to address this issue. My friend had the same problem and he ended up getting a settlement of $5,000 from a class action. I may have to go that route if GM refuses to address these transmission problems mine is an 8 speed transmission too.
It’s this real?
I don’t think people understand how much more complex these are these days. These transmissions have to integrate so many different readings and sensors to figure out a shift and do it with twice the amount of gears and 4 times the amount of readings coming in is tough to account for all circumstances. Back in the day was easy, speed and throttle positions maybe. Today, it is reading engine temps, trans temps, air temps, stability sensor readings, traction control readings, steering inputs, throttle inputs and so much more, it can only cover and test so many scenarios in real world and simulated driving, I am not surprised they are having more gaps found where it might get confused or clunk or not respond how one would thing. They expect it to be perfect 100% of the time but there are now even more holes that can’t get tested to account for.
These are so much smarter than even 10 years ago, there will be a time it gets confused and they are smarter and try to learn from what I understand, still some slack needs to be given. The 8speed before was pretty good once the fluid was changed for the most part, but this 10 speed just adds another level of complexity.
Yeah but have they come up with a way to get rid of the Android crap off the stereo and make my thumb drive work with voice yet? Stereo is no better than an AM/FM from the 70’s except with Sirius/XM. At least in the past you could install your stereo. And no, I don’t have a smart phone and I am not getting one.
Android crap? And you don’t have a smart phone?
Do you even know what you’re mad about?
I have a 2023 5.3L Denali and I hope replacing the TCM fixes it. Coming from a 2012 Tundra, I was expecting GMC to hold it’s own even for a bit. This is not a deal-breaker (yet) but there is still much more to expect from this premium truck!