GM Chevy Mid-Size Cars 1964-1988 Repair Guide

Blower Motor

Print

REMOVAL & INSTALLATION



See Figures 1, 2, 3, 4, 5 and 6

1964-67
  1. Disconnect the negative battery cable.
  2.  
  3. Unclip the hoses from the fender skirt.
  4.  
  5. Disengage the electrical feed from the motor.
  6.  
  7. Turn the front wheels to the extreme right.
  8.  
  9. Remove the right front fender skirt bolts and allow the skirt to drop, resting it on top of the tire. It may be wedged away from the fender lower flange with a block of wood to provide better access to the bolts.
  10.  
  11. Remove the screws attaching the blower motor mounting plate to the air inlet housing.
  12.  
  13. Remove the screws attaching the blower motor to the mounting plate.
  14.  
  15. Remove the clip attaching the cage to the shaft and remove the blower motor.
  16.  

To install:
  1. Position the blower motor in the vehicle, then install the attaching clip to the cage and shaft
  2.  
  3. Install and tighten the screws attaching the motor to the mounting plate, then install and tighten the screws attaching the mounting plate to the inlet housing.
  4.  
  5. Remove the wooden block, then reposition the fender skirt and secure using the retaining bolts.
  6.  
  7. Engage the motor electrical feed, then clip the hoses back into position in the fender skirt.
  8.  
  9. Connect the negative battery cable and check for proper motor operation.
  10.  



Click image to see an enlarged view

Fig. Fig. 1: Heater air flow schematic-common mid-sized Chevrolet

1968-72
  1. Disconnect the negative battery cable.
  2.  
  3. Disconnect the hoses and wiring from the fender skirt.
  4.  
  5. Remove all fender skirt attaching bolts except those attaching the skirt to the radiator support.
  6.  
  7. Pull out, then down, on the skirt. Place a block between the skirt and the fender.
  8.  
  9. Remove the blower-to-case attaching screw, then carefully remove the blower assembly.
  10.  
  11. If necessary, remove the blower wheel retaining nut, then separate the motor and the wheel.
  12.  

To install:
  1. If removed, engage the motor and the wheel, then secure using the retaining nut.
  2.  
  3. Install the motor assembly and install the attaching screw. The open end of the blower should be away from the motor.
  4.  
  5. Remove the block, then reposition and secure the fender skirt.
  6.  
  7. Connect the hoses and wiring to the fender skirt.
  8.  
  9. Connect the negative battery cable, then check for proper motor operation.
  10.  



Click image to see an enlarged view

Fig. Fig. 2: Disconnect the blower motor wiring harness



Click image to see an enlarged view

Fig. Fig. 3: If equipped, disconnect any hoses from the blower motor housing



Click image to see an enlarged view

Fig. Fig. 4: Disconnect any ground wires from the motor housing, if present



Click image to see an enlarged view

Fig. Fig. 5: Lift the blower motor assembly from the housing



Click image to see an enlarged view

Fig. Fig. 6: Example of a blower motor/heater module mounting

1973 and Later
  1. Disconnect the negative battery cable.
  2.  
  3. Disconnect the motor lead wire.
  4.  

If equipped with A/C, disconnect the cooling tube.

  1. If equipped, remove the ground wire from the blower motor housing.
  2.  
  3. Remove the blower-to-case screws, then carefully withdraw the blower.
  4.  
  5. If necessary, remove the retaining nut to separate the motor and wheel.
  6.  

To install:
  1. If removed, install the wheel to the motor and secure using the retaining nut.
  2.  
  3. Insert the blower motor into the module and secure using the case screws. If applicable, be sure to position the ground wire under the appropriate case screw before tightening.
  4.  
  5. If equipped with A/C, connect the cooling tube.
  6.  
  7. Connect the motor lead wire.
  8.  
  9. Connect the negative battery cable, then check for proper motor operation.
  10.  

 
label.common.footer.alt.autozoneLogo