Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSATURN2000LS2 V6-3.0L VIN RREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCONTROL ASSEMBLYDESCRIPTION AND OPERATION
2000 Saturn LS2 V6-3.0L VIN R
Control Assembly: Description and Operation
2000 Saturn LS2 V6-3.0L VIN RSECTION Description and Operation
HVAC CONTROL - GENERAL DESCRIPTION
The operation of the A/C and heating system is controlled by the buttons, rotary switch, and knobs on the HVAC control head. The compressor clutch, rear defog and recirc motor are controlled electrically by push buttons on the control head.
Blower speeds are controlled in all modes by a five position rotary switch. The blower, compressor, and recirc motor are not operational when the blower switch is in the Off position.
The temperature knob controls the temperature door through a cable from the HVAC control assembly to the HVAC module. The mode knob controls the various mode positions using an actuator located on the HVAC module.
The control head logic will automatically select outside air and A/C whenever defrost and heater/defrost is selected, regardless of the A/C and recirculation button position.
The operation of the A/C and heating system is controlled by the buttons, rotary switch, and knobs on the HVAC control head. The compressor clutch, rear defog and recirc motor are controlled electrically by push buttons on the control head.
Blower speeds are controlled in all modes by a five position rotary switch. The blower, compressor, and recirc motor are not operational when the blower switch is in the Off position.
The temperature knob controls the temperature door through a cable from the HVAC control assembly to the HVAC module. The mode knob controls the various mode positions using an actuator located on the HVAC module.
The control head logic will automatically select outside air and A/C whenever defrost and heater/defrost is selected, regardless of the A/C and recirculation button position.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.