GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 38864 Door Module Coil Spring Tool

Caution: Do not attempt to service the regulator motor without releasing the counterbalance spring tension. The regulator lift arm is under tension from the counterbalance spring and can cause personal injury if the motor is removed from the regulator.

  1. Remove the front door trim panel. Refer to Front Side Door Trim Panel Replacement .
  2. Remove the front door water deflector. Refer to Front Side Door Water Deflector Replacement .
  3. Apply the cloth backed body tape from the window over the top of the door to the other side of the window in order to hold the window in position when the removing the regulator.
  4. Remove the wiring harness from the regulator motor.
  5. Important: Draw a line across the spring through the center with a marker or grease pencil in order to aid in the re-installation and orientation of the counterbalance spring.

  6. Use J 38864 in order to release the regulator spring tension.
  7. Walk down the spring tension.


    Object Number: 319779  Size: SH
  8. Unsnap the power window motor in order to remove the power window motor from the lock module.

Installation Procedure

Tools Required

J 38864 Door Module Coil Spring Tool

  1. Lubricate the motor drive gear and the regulator sector teeth.

  2. Object Number: 319781  Size: SH
  3. Snap the power window motor to the lock module in order to install the power window motor.
  4. Important: Ensure the marker or grease pencil line from the removal procedure is lined up. Lining up the mark will set the correct pre-tension of the counterbalance spring.

  5. Use the J 38864 in order to install the spring tension. Walk up the spring tension.
  6. Install the wiring harness to the regulator motor.
  7. Install the front door water deflector. Refer to Front Side Door Water Deflector Replacement .
  8. Install the front door trim panel. Refer to Front Side Door Trim Panel Replacement .