GM Transmission MHS (2022) vs MQC (2021)

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pruittatl

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As I was reviewing my build with GM (2023 Yukon Denali XL with 3.0 L Duramax) vs my in laws build with GM (2023 Chevrolet Tahoe with 5.3 L V8), I realized that our 10 speed automatic transmission code was different. After doing some research I realized that the new 5.3 and 6.2 V8s got an updated 10 speed automatic transmission (Transmission Code MHS) that come with OTA update ability in 2022 but GM has decided to continue to use the 2021 version of the same transmission (Transmission Code MQC) in all the 3.0 L Duramax vehicles. I wonder why this is..? Anyone have anymore information on the topic?
 

Suburban2024

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As I was reviewing my build with GM (2023 Yukon Denali XL with 3.0 L Duramax) vs my in laws build with GM (2023 Chevrolet Tahoe with 5.3 L V8), I realized that our 10 speed automatic transmission code was different. After doing some research I realized that the new 5.3 and 6.2 V8s got an updated 10 speed automatic transmission (Transmission Code MHS) that come with OTA update ability in 2022 but GM has decided to continue to use the 2021 version of the same transmission (Transmission Code MQC) in all the 3.0 L Duramax vehicles. I wonder why this is..? Anyone have anymore information on the topic?

Most likely GM has some stock of the MQC transmissions. And most buyers prefer gasoline engine. Therefore, gas vehicle owners will more frequently encounter transmission problems. So GM put updated (doesn't mean upgraded) tranny on gasoline vehicles. I am saying so because I researched Ford's 10R80 transmission. 10R80 is the brother of GM's 10L80. 10R80 frequently malfunctions and owners have to visit dealerships to do a "re-learn" or update software. I guess GM figures OTA is more convenient to deal with those common problems. Back to your concern, I don't think it's a big deal by all means. A 10L80 is a 10L80, no matter OTA or dealership.
 
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Suburban2024

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Most likely GM has some stock of the MQC transmissions. And most buyers prefer gasoline engine. Therefore, gas vehicle owners will more frequently encounter transmission problems. So GM put updated (doesn't mean upgraded) tranny on gasoline vehicles. I am saying so because I researched Ford's 10R80 transmission. 10R80 is the brother of GM's 10L80. 10R80 frequently malfunctions and owners have to visit dealerships to do a "re-learn" or update software. I guess GM figures OTA is more convenient to deal with those common problems. Back to your concern, I don't think it's a big deal by all means. A 10L80 is a 10L80, no matter OTA or dealership.
 
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