PROBLEM SOLVED.
No signal was being received from the driver's seat module - located under the seat. The driver's seat was removed to allow access to the module. From the factory, the module's harness was not fully engaged. From that point it was probably knocked completely loose at the car wash while they were vacuuming under the seat.
Man, all I can say is - Whew! I sure hope that this is the worst thing that ever happens to this truck. No more
; now I am
.
