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 MANUALSPONTIAC1998FIREBIRD V8-5.7L VIN GREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCONTROL ASSEMBLYDESCRIPTION AND OPERATIONTEMPERATURE CONTROL
1998 Pontiac Firebird V8-5.7L VIN G
Temperature Control
1998 Pontiac Firebird V8-5.7L VIN GSECTION Temperature Control
Temperature Control Knob
The temperature control knob regulated the HVAC system air temperature. Turning the knob to the RH increases the air temperature. Turning the knob to the LH will decrease the air temperature. The temperature control knob is located in the center of the HVAC control head. The temperature control knob is mechanically linked to the air temperature valve (door) by temperature control cable.
The temperature control knob regulated the HVAC system air temperature. Turning the knob to the RH increases the air temperature. Turning the knob to the LH will decrease the air temperature. The temperature control knob is located in the center of the HVAC control head. The temperature control knob is mechanically linked to the air temperature valve (door) by temperature control cable.
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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.