Ok group, I've got a serious problem. I've got a 14 3500 srw with the Aisin. I've had Ray's complete option product installed for a month, over one thousand miles.

While driving last night, I was about half way through a 30 mile trip. It was around 68 degrees and lightly raining, mildly accelerating getting close to 60 mph and the truck down shifts, check engine light comes on, and I got the 4 wheel drive service temporarily unavailable message on the dash.

While driving seemed the the truck was stuck in gear and the manual shift buttons would not work. Got home and put the truck in reverse and BAM. Into park went smooth, then into drive BAM. I thought I was going to drop everything under the truck. I used my mm3 and there weren't any DTCs. Let the truck sit over night and this morning the same alarm but I'm not going to drive it in fear of more damage. The engine is running fine.

Couple questions:

Has anyone experienced this?

Is there a way to check the TCM for codes?

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