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 MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCONTROL ASSEMBLYSERVICE AND REPAIRHEATING AND VENTILATIONCONTROL ASSEMBLY REPLACEMENT
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Control Assembly Replacement
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Control Assembly Replacement
Control Assembly Replacement
REMOVAL PROCEDURE
1. Remove the instrument cluster trim plate.
2. Remove the retaining screw from the left edge of the control assembly.
3. Pivot the control assembly from the instrument panel.
4. Pull the control assembly out of the instrument panel in order to access the vacuum and the electrical connectors.
5. Disconnect the following items from the control assembly:
^ The electrical connectors.
^ The vacuum connectors.
INSTALLATION PROCEDURE
1. Connect the following items to the control assembly:
^ The vacuum connectors.
^ The electrical connectors.
2. Align the tab on the control assembly with the slot in the instrument panel.
3. Pivot the control assembly into the instrument panel.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Install the screw in order to retain the left edge of the control assembly.
Tighten
Tighten the screw in order to retain the left edge of the control assembly to 2 N.m (18 lb in).
5. Install the instrument cluster trim plate.
REMOVAL PROCEDURE
1. Remove the instrument cluster trim plate.
2. Remove the retaining screw from the left edge of the control assembly.
3. Pivot the control assembly from the instrument panel.
4. Pull the control assembly out of the instrument panel in order to access the vacuum and the electrical connectors.
Heater Control Vacuum And Electrical Harness:
5. Disconnect the following items from the control assembly:
^ The electrical connectors.
^ The vacuum connectors.
INSTALLATION PROCEDURE
Heater Control Vacuum And Electrical Harness:
1. Connect the following items to the control assembly:
^ The vacuum connectors.
^ The electrical connectors.
2. Align the tab on the control assembly with the slot in the instrument panel.
3. Pivot the control assembly into the instrument panel.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Install the screw in order to retain the left edge of the control assembly.
Tighten
Tighten the screw in order to retain the left edge of the control assembly to 2 N.m (18 lb in).
5. Install the instrument cluster trim plate.
RENDER: 1.0x
NO RELATED
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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.