For models through 1996, begin by disconnecting the cable from the negative terminal, clear any lockout on the Theft Lock audio system if present. After that, unfasten the mounting screws for the instrument panel pad and the bezel to come out, take out the steering column bracket and lower the steering column, angling the tilt wheel to an almost flat position and placing the gear shift lever on the L1 position for column shift models. Go ahead and pull out the instrument panel cluster and again, loosening the mounting screws as well as disconnecting any interfering switches or controls. In its turn, installation proceeds in the reverse order to removal. Also for 1997 and later models the tilt steering wheel to the lowest position and put the gear shift lever to L1 position if has column shift lever. On Buick models, thus, do the following; Unscrew the two end covers on both ends of the instrument panel. Then, optional-B, first remove the lower sound insulator panels, and then the filler panels at the left and right ends of the dash. Removal of Grand Prix models requires the removal of the knee bolster panel and the mounting screws that are attached to the steering column and loosening of the steering column. On Buick models, take a screwdriver to the right part of the top of the dashboard as this frees a tab and with your hand pull the trim panel from the right to the left. For the models Grand Prix the bottom of the instrument cluster trim bezel must slide back to release; removing the fog lamp switch if any. When the trim bezel is out you should be able to access the instrument cluster mounting screws and remove the bolts, to disconnect the electrical connectors to the cluster and detach the cluster. Installation is performed in the reverse sequence.