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My ac stops blowing from time to time and when it does I have a check engine light saying I need to reprogram the HVAC control module. Anyone know how this is done? Thanks
 

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What is the code on a scanner? It will be the letter "B" or "U" followed by some numbers and letters.
 

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I don't see those codes under HVAC module. Are you sure about those?
 

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These are the possible codes for the blower motor control:
B10E8-11-BLOWER MOTOR CONTROL - CIRCUIT SHORT TO GROUND
B10E8-12-BLOWER MOTOR CONTROL - CIRCUIT SHORT TO BATTERY
B10E8-16-BLOWER MOTOR CONTROL - CIRCUIT VOLTAGE BELOW THRESHOLD
B10E8-17-BLOWER MOTOR CONTROL - CIRCUIT VOLTAGE ABOVE THRESHOLD

For possible causes, they all have wiring, the blower power module, or the heater control.
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The schematic is showing you the circuit. Check the wiring for short to ground or voltage and for continuity. Swap same type relays in the PDC. There is noting in the FSM about reprogramming the HVAC module. If the wiring checks out ok, you probably have a bad blower module or the blower itself is going or gone. It's a fairly common problem.
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