The blower motor on your 1997 Chevrolet Astro Van is used to force the air through the ducts for both heating and air conditioning. The front of the unit has both the heater core and the A/C evaporator inside. It is located on the passenger's side of the engine compartment on the firewall behind the windshield washer and coolant tanks. If you notice a lack of air coming through the vents when the heater or air conditioner is turned on, you may need to replace the blower motor .
Raise the hood and prop it open. Disconnect the cable from the negative terminal of the battery. If your Astro Van has an anti-theft audio system, disable it before disconnecting the battery.
Disconnect the overflow hose from the radiator filler neck to begin the removal of the windshield washer fluid and coolant overflow reservoirs. Detach the electrical connections and washer fluid hoses from the windshield washer pumps. Remove the reservoirs from the vehicle.
Remove the acoustic cover over the blower motor by removing the two securing screws. Cut the plastic between the clip lands on the acoustic cover. Remove the acoustic cover.
Detach the electrical connectors and cooling tube from the blower motor. Remove the mounting bolts securing the blower motor. Withdraw the blower motor from the HVAC unit and remove it from the vehicle. On some models, due to space limitations, you have to remove the fan from the blower motor before the motor can be removed from the vehicle; you can accomplish this with a socket and ratchet.
