I have a 2021 3500 SRW HO/Aisin. About 25% of the time if I don't engage Tow/Haul prior to putting the truck in drive it won't engage. Ex. if I start driving and push Tow/Haul the light comes on the instrument panel like normal. but wont actually engage no matter how many times the cycle the button, even if I stop put the truck in Park and engage before shifting into Drive.
When this happens the only way to engage Tow/Haul is to shut the truck off, restart and then when I press the button it will engage. Like I said this happens about 25% of the time. My 2017 never did this and I had 4 times as many miles as my 21. Anybody else have this issue?
When this happens the only way to engage Tow/Haul is to shut the truck off, restart and then when I press the button it will engage. Like I said this happens about 25% of the time. My 2017 never did this and I had 4 times as many miles as my 21. Anybody else have this issue?