C 1500 Yukon 2WD V8-4.8L VIN V (2000)
Steps 29-40
The number(s) below refer to the step number(s) on the diagnostic table.
4. The HVAC control module is inoperative when the module does not respond to any operator control requests.
24. When the blower motor is in the OFF position, a voltage is applied to the OFF blower motor control circuit. The A/C system will not operate if a
voltage is applied to the OFF blower motor control circuit.
