K Yukon/Denali 4WD V8-5.7L VIN R (2000)
Heater Core: Description and Operation
Heater - Auxiliary
General
An auxiliary heater provides additional heating for the rear of the Suburban model.
This unit operates independently of the standard heater. The auxiliary heater controls in the instrument panel (auxiliary heater models) or in the roof
panel (auxiliary heater and A/C models) regulate the auxiliary heater. The auxiliary heater system consists of a separate heater core and a separate blower
fan unit mounted in the rear of the vehicle.
Blower Motor Control Switch
The location of the auxiliary heater blower switch is in the instrument panel to the right of the steering column (auxiliary heater models) or in the roof
panel (auxiliary heater and A/C models).
