Power Window Regulator - Rear

Replace the rear power window regulator assembly on a 2023 Chevrolet Bolt EUV, including removal of the door panel, disconnection of the window motor, and installation of a new regulator mechanism.

Warnings

Tools required

Parts

• Rear power window regulator assembly × 1 — Use OEM specification
• Door panel retaining clips (as needed) × 1 — Replace any broken clips

Preparation

1. Park the vehicle on a level surface and engage the parking brake.
2. Disconnect the 12V auxiliary battery negative terminal located in the rear cargo area beneath the floor panel.
3. Wait at least 2 minutes after battery disconnection to allow capacitors to discharge.
4. Roll the rear window down approximately halfway to access regulator mounting bolts (if window is functional).
5. Gather all tools and the replacement regulator assembly.

Procedure

1. 1

   Remove door panel fasteners
   Remove the Torx screws securing the door panel, typically located in the door pull handle area and lower door edge. Remove the Phillips screw behind the interior door handle trim. Use the trim removal tool to carefully release all retaining clips around the perimeter of the door panel.
2. 2

   Disconnect door panel electrical connectors
   Lift the door panel upward and away from the door frame slightly. Disconnect all electrical connectors for the window switch, door lock switch, and any other door-mounted controls. Press the connector release tabs and pull straight out to avoid damaging pins.
3. 3

   Remove door panel and water barrier
   Fully remove the door panel and set aside on a protected surface. Carefully peel back the plastic water barrier sheet to access the interior door structure. Take care not to tear the barrier as it must be reused to maintain water seal integrity.
4. 4

   Support and secure the window glass
   Raise or lower the window glass to a position where the regulator attachment bolts are accessible through the door service holes. Use masking tape to secure the glass in the full-up position against the door frame to prevent it from falling once disconnected from the regulator.
   ⚠Ensure the glass is firmly taped in position before proceeding. Unsupported glass can drop suddenly and shatter.
5. 5

   Disconnect window glass from regulator
   Through the access holes in the inner door panel, locate and remove the bolts securing the window glass to the regulator lift mechanism. Carefully detach the glass from the regulator channel. Ensure the glass remains securely taped in the up position.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
6. 6

   Disconnect window motor electrical connector
   Locate the window motor electrical connector inside the door cavity. Press the connector lock tab and disconnect the harness from the motor. Route the connector clear of the regulator assembly.
7. 7

   Remove regulator mounting bolts
   Remove all mounting bolts securing the window regulator assembly to the inner door panel. There are typically 4-6 bolts holding the regulator and motor assembly in place. Keep track of bolt locations as some may be different lengths.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
8. 8

   Extract the old regulator assembly
   Carefully maneuver the regulator and motor assembly out through the large service opening in the inner door panel. The assembly may need to be rotated or tilted to clear the door structure. Take note of the regulator orientation for proper installation of the new unit.
9. 9

   Install new regulator assembly
   Position the new regulator assembly inside the door cavity, ensuring it is oriented correctly to match the removal position. Maneuver the assembly into place, aligning the mounting holes with the door panel. Install and hand-tighten all mounting bolts before final torquing.
10. 10

    Torque regulator mounting bolts
    Using a torque wrench, tighten all regulator mounting bolts to specification in a cross-pattern to ensure even pressure distribution. Verify all bolts are secure and the regulator assembly is firmly mounted without movement.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)
11. 11

    Reconnect window motor and test operation
    Reconnect the window motor electrical connector, ensuring it clicks into place securely. Temporarily reconnect the 12V battery and door panel window switch to test regulator operation before final assembly. Verify smooth operation through full travel range.
    ℹ️Do not attach the glass yet. Test only the regulator mechanism movement at this stage.
12. 12

    Attach window glass to regulator
    Remove the masking tape securing the glass. Lower the regulator mechanism to align with the glass attachment points. Insert the glass into the regulator channel and install the attachment bolts. Torque the bolts to specification. Test window operation through full travel to ensure smooth movement.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)
13. 13

    Reinstall water barrier and door panel
    Reposition the plastic water barrier, ensuring all edges are properly sealed to the door frame. Reconnect all door panel electrical connectors. Align the door panel with the door frame and press firmly to engage all retaining clips. Install all screws and torque fasteners to specification where applicable.

Reassembly

1. Ensure all door panel clips are fully seated and the panel is flush with the door frame.
2. Verify all electrical connectors are properly engaged with audible clicks.
3. Reconnect the 12V auxiliary battery negative terminal and torque to specification.
4. Test all door functions including window operation, locks, and switches to ensure proper operation.

Verification

• Operate the rear window through multiple full up and down cycles to verify smooth operation without binding or unusual noise.
• Check that the window seats properly in the full-up position with even gaps along the weatherstrip.
• Verify the window stops automatically at the full-up and full-down positions without stalling the motor.
• Confirm all door panel fasteners are secure and there are no rattles when closing the door.
• Test the window auto-up and auto-down features (if equipped) to ensure proper function.
• Inspect for proper weatherstrip contact and listen for wind noise during a test drive.

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →

More procedures for this vehicle