Hats off to QUALITYTRUCK, your the man.
Problem solved, Bad aux. PDM in pillar B behind the driver's seat.
Fault on the dash was HVAC 2 Controller no response code #200s254 07 also 12 volt back feed on CB2 (pinB6) in the aux. PDM.
What was not working was the fan motor and the temp servo motor in the bunk.
I hope this information will help some people down the road.