HVAC Compressor Knock Noise - AC part performance
| Subject: | HVAC Compressor Knock Noise - AC part performance |
| 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:
Knock noise from the HVAC compressor.
Recommendation/Instructions:
A new compressor has been released to correct HVAC compressor knock noise. There are currently two compressor part numbers listed in the parts catalog. The part number that should be used is 24432574.
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.
