GM Prizm/Nova 1985-1993 Repair Guide

Blower Motor (Fan Motor)

Print

The blower motor is located under the dashboard on the far right side of the car. It is accessible from under the dashboard without removing the dash. The blower motor turns the fan, which circulates the heated, cooled or fresh air within the car. Aside from common electrical problems, the blower motor may need to be removed to clean out leaves or debris which have been sucked into the casing.

The blower motor may be removed without disconnecting heater hoses. If the car is equipped with air conditioning, the air conditioning system must be discharged and the evaporator unit removed. Please refer to Evaporator - Removal and Installation later in this section. Once the unit is removed, the blower motor can be removed following the procedures below.

REMOVAL & INSTALLATION



1985-90

See Figure 1

  1. Remove the 3 screws attaching the retainer.
  2.  
  3. Remove the glove box assembly.
  4.  
  5. Remove the air duct between the heater case and blower assembly.
  6.  
  7. Disconnect the blower motor wire connector at the motor case.
  8.  
  9. Disconnect the air source selector control cable at the blower assembly.
  10.  
  11. Loosen the 2 nuts and the bolt attaching the blower assembly, then remove the blower.
  12.  
  13. With the blower removed, check the case for any debris or signs of fan contact. Inspect the fan for wear spots, cracked blades or hub, loose retaining nut or poor alignment.
  14.  

To install:
  1. Place the blower in position, making sure it is properly aligned within the case. Install the 2 bolts and the nut and tighten them.
  2.  
  3. Connect the selector control cable at the blower assembly.
  4.  
  5. Connect the wire harness to the motor and install the ductwork between the heater case and the blower assembly.
  6.  
  7. Install the glove box assembly and install the retainer with its 3 screws.
  8.  



Click image to see an enlarged view

Fig. Fig. 1: Heater assembly - 1985-92

1991-92

See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the rubber duct running between the heater case and the blower.
  4.  
  5. Disconnect the wiring from the motor.
  6.  
  7. Remove the 3 screws holding the motor and remove the blower motor.
  8.  
  9. With the blower removed, check the case for any debris or signs of fan contact. Inspect the fan for wear spots, cracked blades or hub, loose retaining nut or poor alignment.
  10.  

To install:
  1. Place the blower in position, making sure it is properly aligned within the case. Install the 3 screws and tighten them.
  2.  
  3. Connect the wiring to the motor.
  4.  
  5. Install the rubber air duct and connect the negative battery cable.
  6.  

1993

See Figure 2

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the 3 bolts and 3 screws and remove the glove box from the vehicle.
  4.  
  5. Disconnect the blower motor electrical connector.
  6.  
  7. Remove the 3 screws and remove the blower motor from the vehicle.
  8.  

To install:
  1. Place the blower in position, making sure it is properly aligned within the case. Install the 3 screws and tighten them.
  2.  
  3. Connect the blower motor electrical connector.
  4.  
  5. Install the glove box to the vehicle and secure with the 3 bolts and 3 screws.
  6.  
  7. Connect the negative battery cable.
  8.  



Click image to see an enlarged view

Fig. Fig. 2: Blower motor - 1993 models

 
label.common.footer.alt.autozoneLogo