First, welcome to the forum. You are actually posting to a thread that is 5 months old. You would have better luck starting a thread of your own detailing the problem.

This is the climate control diagnostic and reset procedure.

With the ignition off, you press and hold the off and auto button
down and turn ignition on, it starts the program. It tests all of the
sensors, fans, heater, A/C and whatever else is involved and then it will give a number in the display.

11/21 = In-vehicle sensor.........open/shorted

12/22 = Ambient sensor............open/shorted

13/23 = Sunload sensor............open/shorted

14/24 = Evaporator sensor.........open/shorted

15/25 = Refrigerant temp sensor...open/shorted

16/26 = Water temp sensor.........open/shorted

31 = Air mix door (PBR)........faulty

32 = Mode door (PBR)...........faulty

33 = Mix door motor............faulty engine

34 = Mode door motor...........faulty engine

35 = Intake door motor.........faulty engine

NOTICE: Anytime codes 13, 33, 34 or 35 are displayed, the condition is one which is currently occurring. Also note that '13' is judged as 'open' not as 'shorted' (23) if there is no light directed at the sensor during the test cycle.

Resetting the climate control unit is done
similarly by holding down the "off" and "Def" buttons while turning the ignition on.