Removal Procedure

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Pull back the sunshade.
Set the sunroof in the closed position.
From inside of the vehicle remove the 4 glass panel adjustment screws.
From inside of the vehicle push up on the sunroof glass panel so that the glass panel can be grabbed and lifted from the roof opening.
Remove the glass panel from the roof opening.

Fig 1: View Of Sunroof Window

Courtesy of GENERAL MOTORS CORP.