Hey Guys,
Had the same issue you guys have been reporting, but with a slightly different twist. When I start my truck it gave me the service 4wd message and the 4wd indicator on the dash went yellow. Parking brake engaged. Brought it to the dealer today and the code came back as Transfer Case Control Module C15A9 5A - Range Actuator Position Sensor and Transfer Case Range Position Sensor Not Plausible.
They "Fixed It" by reprogramming the TCCM.
Less than 12 hours later it reoccured.
Is there a fix, and if so what is it???