Shifting smoothness on new truck

[Streetdaddy]

Ok.. so apparently if you put it in L9 you can disable the dfm feature. Seems to get rid of the slight shuddering of the dfm system. Just learned this so will need to drive it a bit more to give an opinion

 

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[jconner00]

Put it in L9? what does that mean? newbie here expecting delivery soon

 

[Streetdaddy]

LOL I just learned myself. It’s a mode on the shifter . Put in L and toggle up to 9 on paddle shifters

 

[jconner00]

LOL I just learned myself. It’s a mode on the shifter . Put in L and toggle up to 9 on paddle shifters

interesting! You just do that once? Or every time you start the truck?

 

[Streetdaddy]

Every time

 

[jconner00]

Is anyone else with the 2022.5+ model 1500 still having shifting issues? Mine is over 7K miles now and still has a rough shift and shakiness around 40-50 mph as if it cannot find the correct gears. It does this in L9 or normal Drive. Has anyone had their transmission control module replaced as this article says:

https://gmauthority.com/blog/2023/01/gm-releases-fix-for-2022-gmc-sierra-poor-transmission-shift-quality/

 

[Streetdaddy]

Well mine had a catostrophic engine failure. Getting new engine as we speak

 

[jconner00]

Well mine had a catostrophic engine failure. Getting new engine as we speak

oh man!!!!! sorry to hear that