HVAC Control Module
WARNING: This page is about a different car, the 2008 Pontiac G8. However, it is still accessible from the selected car via links, so may be relevant.
The HVAC control module is a device that interfaces between the operator and the HVAC system to maintain air temperature and distribution settings. Operator interface dials and buttons are remote from the HVAC Control Module and are part of the Integrated Center Stack. Button presses are communicated from the Integrated Center Stack to the Radio via a dedicated communication line. The Radio then communicates the information to the HVAC Control Module over serial data. The battery positive voltage circuit provides power that the control module uses for keep alive memory (KAM). The body control module (BCM), which is the vehicle power mode master, provides a device on signal. The control module supports the following features:
| Feature | Availability |
|---|---|
| Afterblow | Available if reprogrammed by the technician |
| Purge | Yes |
| Personalization | No |
| Actuator Calibration | No |
| Heated Seat Control | Optional |