No Heat or Erratic HVAC Operation - GMT368calibration performance heater inoperative actuator
| Subject: | No Heat or Erratic HVAC Operation |
| Models: | . |
When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.
Condition/Concern:
Customer concern of no heat or erratic HVAC operation.
Recommendation/Instructions:
If battery voltage becomes low or power is removed from the control head, the control head may lose calibration. Follow the recalibration procedure in SI document ID number 1236623. If the concern is still present, replace the HVAC control head and perform the recalibration on the new control head.
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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.
Models:
(2003 Chevrolet SSR) and (2004 Chevrolet SSR)
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