gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Heater Core > < A/C Compressor - Loud Knocking Noise|Page 9368
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Heater Control Valve: Locations

This vehicle does not use a Heater Control Valve (Coolant Valve) and the OEM service manual does not provide any information for this component.
Refer to Heater Hose / Locations. 

Heater Core > < A/C Compressor - Loud Knocking Noise|Page 9368