Window Motor and Regulator - Rear

Remove and replace the rear window motor and regulator assembly on a 2023 Chevrolet Bolt EUV, including door panel removal and electrical disconnection.

Warnings

Tools required

Parts

• Rear window regulator and motor assembly × 1 — Use OEM specification
• Door panel retaining clips (assorted) × 1 — Replacement clip set recommended
• Vapor barrier tape (if damaged) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and ensure ignition is off
2. Disconnect 12V battery negative terminal and wait 2 minutes
3. Roll rear window to approximately 1/3 open position before disconnecting battery (allows access to regulator bolts)
4. Protect rear seat and surrounding trim with towels or blankets
5. Photograph door panel and connector locations for reference

Procedure

1. 1

   Remove rear door panel
   Remove the rear door pull handle cover by prying gently with trim tool. Remove Torx screws securing door handle. Remove door panel fastener screws from bottom edge and any visible mounting points. Use panel removal tool to release retaining clips around perimeter of door panel, working from bottom to top. Lift panel upward to disengage from door locking mechanism.
2. 2

   Disconnect door panel electrical connectors
   Locate and disconnect all electrical connectors for window switches, door locks, and any other modules attached to door panel. Press connector release tabs and pull straight out. Set door panel aside in safe location where it will not be damaged.
3. 3

   Peel back vapor barrier
   Carefully peel back the plastic vapor barrier sheet to expose the window regulator assembly. Work slowly to avoid tearing. If using adhesive-backed barrier, minimize damage to adhesive for reuse. Use masking tape to secure barrier out of the way.
4. 4

   Secure window glass
   Locate the window glass attachment points to the regulator. Use masking tape to secure the window glass in the UP position against the door frame to prevent it from dropping when disconnected from regulator. Ensure tape is secure and glass is stable before proceeding.
   ⚠Ensure window glass is properly supported before disconnecting regulator. Unsupported glass can fall and shatter.
5. 5

   Disconnect window motor electrical connector
   Locate the window motor electrical connector inside the door. Press the connector release tab and disconnect the wiring harness from the motor. Move wiring harness clear of work area.
6. 6

   Disconnect window glass from regulator
   Access the window glass attachment bolts through the service holes in the door frame. Remove the two bolts securing the window glass to the regulator lift plate. Gently separate the glass from the regulator while keeping glass secured with tape in UP position.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
7. 7

   Remove regulator assembly mounting bolts
   Locate all regulator assembly mounting bolts (typically 3-4 bolts) securing the regulator tracks and motor to the door frame. Remove these bolts using 10mm socket. Note the position and orientation of any brackets or spacers.
   Torque spec

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

   Extract regulator and motor assembly
   Carefully maneuver the window regulator and motor assembly out through the largest service opening in the door frame. The assembly may need to be tilted and rotated to navigate through the opening. Feed the motor and cable mechanism through carefully to avoid snagging on sheet metal edges.
9. 9

   Install new regulator and motor assembly
   Position the new window regulator and motor assembly and carefully feed it into the door through the service opening. Align the regulator tracks and motor mounting points with the door frame mounting holes. Ensure all cables and tracks are properly positioned and not kinked or twisted.
10. 10

    Secure regulator mounting bolts
    Install all regulator assembly mounting bolts and any brackets or spacers in their original positions. Hand-tighten all bolts first, then torque to specification using torque wrench. Verify regulator assembly is firmly seated against door frame.
    Torque spec

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

    Reconnect window glass to regulator
    Remove tape securing window glass. Carefully lower glass to align with regulator lift plate attachment points. Install the two glass mounting bolts through service holes and torque to specification. Ensure glass is properly seated in regulator clips.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)
12. 12

    Connect electrical and test operation
    Reconnect the window motor electrical connector, ensuring it clicks securely into place. Temporarily reconnect the 12V battery negative terminal. Test window operation through full UP and DOWN travel to verify smooth operation and proper alignment. Check for any binding or unusual noises. Disconnect battery again before continuing.
13. 13

    Reinstall vapor barrier and door panel
    Reposition the vapor barrier over the door opening, pressing adhesive firmly into place. Replace damaged sections with new barrier tape if necessary. Reconnect all electrical connectors to door panel components. Position door panel over door frame, engage upper edge with window slot, then press firmly around perimeter to engage all retaining clips. Install door panel screws and handle components.

Reassembly

1. Reconnect 12V battery negative terminal and torque to 6.0 Nm per specification
2. Perform window initialization/relearn procedure: with ignition on, lower window fully and hold switch DOWN for 2 seconds, then raise window fully and hold switch UP for 2 seconds
3. Test auto-up and auto-down functions to verify proper calibration
4. Inspect door panel fit and verify all clips are properly engaged

Verification

• Test window operation through complete UP and DOWN cycles multiple times to ensure smooth travel
• Verify window auto-reverse function activates when obstructed
• Check for proper window sealing against weatherstripping in UP position
• Confirm no unusual noises, binding, or hesitation during operation
• Test window switch one-touch up and down functions work correctly
• Verify door panel is secure with no rattles or loose clips

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