2014 GM Truck Service 4WD Message And Code C0398

This 2014 Sierra had a Service 4WD Message on the dash and code C0398 in the transfer case control module. A TSB suggested reprogramming the TCCM with updated software. I then had to perform a range relearn.

[@oldbiker9739]

right on !! Phillip .

[@DuaneDonaldson]

You showed 16 modules, I was expecting to see the TCCM, should this vehicle have 17 modules? Thanks for the process required after maintenance to relearn the range selection/position, cheers.

[@jgeorges3061]

PHILLIP, GOOD STUFF BROTHER AND NO PARTS REQUIRED THANKS FOR SHARING.

[@hiveproducts5501]

Turn key off while in 4wd I bet it will get stuck again. Been dealing with this on mine

[@PhillipBailey]

As far as I know it's been working fine.