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Yesterday evening I had the truck in "Auto" mode (advanced 4WD system) and a message came up saying "Service 4WD", then the auto logo changed with an X behind it. I couldn't really tell if it put the truck back into 2HI or not.

 

2023 GMC Sierra Pro 2.7 TurboMax.

 

Anyone have this happen before?

 

This morning driving into work everything seemed back to normal. I put it in 2wd and haven't tried Auto or 4HI yet today

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