Removal Procedure

WARNING:

Refer to Cracked Window Warning .

WARNING:

Refer to Glass and Sheet Metal Handling Warning .

Position the vehicle on level ground and move the front wheels to the straight-ahead position.
Disconnect battery. Refer to Battery Negative Cable Disconnection and Connection (without Start/Stop System) .
Remove liftgate upper trim finish panel. Refer to Liftgate Upper Trim Finish Panel Replacement .
Remove liftgate trim finish panel. Refer to Liftgate Trim Finish Panel Replacement .
Remove liftgate lower trim finish panel. Refer to Liftgate Lower Trim Finish Panel Replacement .
Remove high mount stop lamp. Refer to High Mount Stop Lamp Replacement .
Remove rear window wiper motor. Refer to Rear Window Wiper Motor Replacement .
Disconnect the electrical connectors from the liftgate window defogger bus bars.
Cover the following parts to protect from the broken glass:
- Upper dash pad
- Seats and carpeting

Fig 1: Liftgate Window Diagonal Measurement

Courtesy of GENERAL MOTORS COMPANY

Use BO-46974 system to remove the liftgate window.
Take the diagonal measurement (1) of the liftgate window.
Cut cutting wire to needed lengths.

Fig 2: Cutting Wire To Center Of Liftgate Window

Courtesy of GENERAL MOTORS COMPANY

Heat the awl with a suitable tool.

NOTE:

Ensure that the liftgate window is not damaged in the process. Otherwise, stress cracks could form in the liftgate window. Mask off the area with fabric tape (1).

Stick the awl through the adhesive bead in the area of the lower C-pillar.
Pull the wire through.
- Thread both ends of the cutting wire (3) in the bores of the piercing awl (2) and bend them.
- Use the piercing awl (2) to pull the cutting wire to the center of the liftgate window.

Fig 3: Laying Wire Under Windshield

Courtesy of GENERAL MOTORS COMPANY

Lay the wire under the liftgate window all the way round.

NOTE:

The cutting wire (1) should be rolled in beneath the rubber window seal (2) at the liftgate window.

Pull the remaining wire into the interior.

Fig 4: Pre-Tensioning Cutting Wire

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Ensure that the cutting wire is fitted correctly to the winch deflection roller.

Place the winch (2) with two winding heads on liftgate window inside.
- Position the winch vertically at the same height as the C-pillar.
- Attach the cutting wire (1) to the winch (2).
- Insert transfer ratchet and pre-tension cutting wire.

NOTE:

Arrow shows the path taken by the cutting wire.

Cut out the liftgate window until the cutting wire is level with the winch.

Fig 5: Positioning Winch

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Ensure that the cutting wire is fitted correctly to the winch deflection roller.

Place the winch (2) with two winding heads in the vehicle.
- Position the winch (2) in the area of the roof frame.
- Insert transfer ratchet and pre-tension cutting wire (1).

NOTE:

Arrow shows the path taken by the cutting wire.

NOTE:

Increased cutting effort is required in the area of the liftgate window radius.

Cut out the liftgate window until the cutting wire levels with the winch.

Fig 6: Cutting Wire

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Ensure Check that the cutting wire is laid correctly to the winch deflection roller.

Place the winch (2) with two winding heads in the vehicle.
- Position winch (2) in the middle area of liftgate window.
- Insert transfer ratchet and pre-tension cutting wire (1).

NOTE:

Arrow shows the path taken by the cutting wire.

Cut out the liftgate window until the cutting wire levels with the winch.

Fig 7: Path For Cutting Wire

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Ensure that the cutting wire (3) is fitted correctly to the winch deflection roller.

Position the winch with one winding head on liftgate window inside.
- The winch (1) with 2 winding heads stays in the position.
- Position winch (2) with one winding head in the area of the lower C-pillar.
- Thread the second end of the wire (3).
- Insert transfer ratchet and apply tension to the cutting wire.

NOTE:

Arrow shows the path taken by the cutting wire.

NOTE:

Increased cutting effort is required in the area of the liftgate window radius.

Cut out the liftgate window until the cutting wire levels with the winch.

Fig 8: Positioning Wire Wench

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Check that the cutting wire is laid correctly at the winch deflection roller.

Position the winch (1) with one winding head in the vehicle.
- Position the winch (1) with one winding head in the upper area of the liftgate window.
- Insert transfer ratchet and pre-tension cutting wire (2).

NOTE:

Arrow shows the path taken by the cutting wire.

NOTE:

Increased cutting effort is required in the area of the liftgate window radius.

Cut out the liftgate window until the cutting wire levels with the winch.

Fig 9: Inserting Transfer Ratchet And Pre-Tensioning Cutting Wire

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Check that the cutting wire (2) is laid correctly to the winch deflection roller.

Position the winch (1) with one winding head on liftgate window inside.
- Position winch (1) with one winding head next to winch with two winding heads so that the cutting wire (2) crosses.
- Insert transfer ratchet and pre-tension cutting wire.

NOTE:

Arrow shows the path taken by the cutting wire.

Cut out the liftgate window until the cutting wire (2) has cut through the adhesive bead completely.
Remove glass removal system.
Fit and lock BO-641 holder onto liftgate window.

NOTE:

Second mechanic required.

Remove liftgate window.

Fig 10: Cutting Out Adhesive Tape

Courtesy of GENERAL MOTORS COMPANY

Cut out the adhesive tape with the knife provided (1) to within 1 mm (0.039 in).
Repair any paint damage.
Using a touch-up pen to match the color of the vehicle, repair any paint damage.
If the liftgate window rubber is damaged, replace with a new one.
Cut off the adhesive bead on the glass pane.
Cut out the adhesive tape with the knife provided to within 1 mm (0.039 in).