Passenger Compartment Heater System Description and Operation
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
| 1 | Engine Coolant Surge Tank |
| 2 | Engine Connection |
| 3 | 12 V Auxiliary Heater Coolant Pump |
| 4 | Heater Core |
The passenger compartment heater system uses the engine radiator, a 12 V auxiliary heater coolant pump, an exhaust gas heat recovery system, and a heater core.
The engine control module turns on the auxiliary heater coolant pump when passenger compartment heating is needed during the Autostop (engine off) hybrid mode. Passenger compartment heat is provided by air flowing through the heater core.