How to Replace the Front Door Glass on a 1999 Pontiac Grand Prix

Door glass on your 1999 Pontiac Grand Prix is a type of glass known as tempered glass. This glass goes through a special process of heating and cooling which produces glass that does not shatter into sharp shards when broken. Tempered glass, which is a type of safety glass, breaks into nuggets when hit with enough force to break the window. You can replace the front door glass on your 1999 Pontiac Grand Prix without special tools.

Instructions

Remove the negative battery cable with a wrench.

Remove the small plastic covers over the trim panel screws located in the inner door handle pocket and the armrest with a putty knife. Remove the trim panel screws with a screwdriver.

Pry out the electric window control unit with a putty knife and unplug it (or remove the manual crank with a screwdriver, if you don't have power windows). Remove the power mirror remote control from the driver side door with a screwdriver.

Insert the putty knife between the door and the panel clips and pry the clips loose from the door. Remove the trim panel from the door and disconnect the door courtesy light and any other wires that remain between the panel and the door.

Peel the inner and outer belt line sealing strip from the door with a putty knife. Remove the run channel screws with a screwdriver and pull the run channel from the door. Remove the front run channel as well if necessary.

Raise the window halfway. Push on the rear retainer clip to release the window from the rear run channel. Remove any window retaining bolts, if necessary, with a wrench.

Disengage the regulator arm from the sash channel and tilt the glass inboard of the door. Lift the glass up and out of the door.

Insert the new glass into the door. Engage the regulator arm roller with the sash channel. Lower the glass halfway and slide the window back to engage the rear run channel.

Lower the window to leave about three inches of glass showing. Install the front glass channel and engage the front retainer with the glass. Install the window retaining bolts, if applicable, and tighten them down.

Reverse the disassembly steps for reassembly.