91 C1500 Dash

Hi
Be carfull you don't get in over your head ! If you have done dash work before you will be ok. if not it may get a little scary!! LOTS of screws !!!everything has to come out - radio,a/c control , instrument cluster . speakers. steering column-you may get away with just lowering the column ? anyway here is some step by step instructions out of ALLDATA
sorry the pictures would not copy, but maybe it will help.....If you ever have any questions or need advice on any of your vehicles go to yourautoadvisor.com its a great site and they can help you with anything!!! good luck !
Disconnect battery ground cable.
Disconnect radio receiver electrical connectors, then remove receiver attaching screws and receiver, Fig. 10.
On models equipped with tape player, remove tape player attaching screws, then pull tape player rearward and disconnect electrical connector.
On all models, remove control head attaching screws, then pull control head rearward and disconnect antenna and electrical connectors, Fig. 11.
Remove speaker grilles by prying upward, then remove screws attaching speaker to instrument panel.
Disconnect speaker electrical connector and remove speaker.
Remove instrument cluster bezel attaching screws, then pull bezel away from cluster and remove headlamp switch attaching screws.
Remove heater and A/C control attaching screws, then pull assembly out from the instrument panel and disconnect electrical connectors, Fig. 12.
Remove steering column filler panel, Fig. 13.
Disconnect shift indicator cable from steering column, then remove retaining nuts from each side of the steering column and lower column.
Loosen clips and bolts from left and right lower bracket mounted studs supporting instrument panel carrier, Fig. 14.
Remove both kick panels and defroster vent.
Remove five upper instrument panel mounting screws and pull panel rearward.
Remove heater nozzle to panel attaching screws, then disconnect any remaining electrical connectors and remove panel.
Reverse procedure to install.