Express 4500 V8-6.0L (2010)
Control Module HVAC: Service and Repair
Auxiliary HVAC Control Processor Replacement
Removal Procedure
1. Lower the front headliner to access the HVAC control processor. Refer to Headlining Front Trim Panel Replacement (See: Body and
Frame/Interior Moulding / Trim/Headliner/Service and Repair/Headlining Front Trim Panel Replacement).
2. Remove the HVAC control processor from the roof panel.
3. Remove the HVAC control processor access cover (3).
4. Remove the HVAC control processor (2) from the HVAC processor case (1).
Installation Procedure
1. Install the HVAC control processor (2) to the HVAC processor case (1).