I need to installl a cd player in my car and i cant get the thing that holds the radio and heater off.

You will have to remove the dash cover to gain access to that bezel piece. That bezel actually extends around the instrument cluster and and radio area, all one piece. The dash cover is held on by a series of torx screws located under the top defrost vent, side access panels (when you open the car doors, there is a panel on each side). In the glove box area and there are two 10 mm bolts that are tucked up under in the glove box area but accessible. After you remove the dash cover, you can remove the torx screws that hold the bezel in place. On the bezel down by the radio, there are spring clips that hold that part of the bezel. Remember when replacing the stock OEM radio, you will need to buy a mounting hardware kit, wiring harness kit and antenna kit for the Cavalier that will work with your new cd player.