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Window Regulator & Motor

CAUTION: Disconnect electrical connections before removing regulator assembly from window or injury may result.
  1. Raise window to full "UP" position and tape glass to door frame to prevent it from falling. Disconnect negative battery cable and remove door trim panel.
  2. Remove remote control bolts and place control assembly aside. Remove regulator-to-door panel attaching screws. Disconnect harness from regulator.
  3. Slide regulator assembly rearward, disengaging rollers from sash panel. Remove regulator assembly.
    CAUTION: Step 4) must be performed when regulator is removed from door. Serious injury can result if motor is removed without locking sector gear.
  4. Drill a hole through sector gear and back plate. Do not drill closer than 1/2" (13 mm) to edge of sector gear or back plate. Install sheet metal screw into hole to lock sector gear.
  5. Remove motor-to-regulator attaching screws and remove regulator from motor.
  6. To install, reverse removal procedures. Note that the motor drive gear and regulator sector gear should be lubricated with an approved lubricant that is effective down to -20°F. (-29°C).
    Fig 1: General Motors Power Window Regulator, Motor and Connector
    G09337510Courtesy of GENERAL MOTORS COMPANY