[y2kpa2]

you should have a tape player below the radio and climate control and above the ashtray you will have to remove that. screws are behind the trim peice, then you will have to get the radio install peice they are hard to find but curcuit city should still keep them in stock, that will make your aftermarket radio fit in the tape player cavity. you will also need a radio wiring harness that will change your new radio wiring be able to plug in to the wiring harness you have to remove from the silver reciever box in the dash you will want to measure to make sure the new wiring will reach the existing wiring (unpluged from the silver box)you may have to add equal lengths of wire between the new radio wiring and the new harness if not already remove the glove box to work from instead of under the dash the tape player cavity opens up to glove box cavity all of your new wiring will go through there also don't forget your antenna wiring will also have to reach to the former tape player location and gm uses a smaller male antenna plug, adapters are also avalible

For the amp wiring, i personaly had to replace my power antenna with a mast antenna so i tested the remaining harness for constant and switched power and used that. my suggestion if that is not an option for you: your new radio should have a remote wire DO NOT hook that to your new harness instead run that down the passenger side and under the back seat out to the trunk along with your 12v constant. there under the trim where the door closes and the floor carpet starts,and under the back seat there is a conduit where the fuel pump, brake light,ect wiring runs to the back

Hope i didn't confuse you and Good Luck!!