It is the same one that controls the brake lights. You can get them from the local parts store, and they are cheap enough to by new. They are easy to replace...disconnect the wires, pull on the old one, and push the new one in until the body touches the brake pedal...reattach the wires.
1991 OCC 461 (.030 over 454) BBC, 3.23 posi, flash to pass, drop spindles & springs, Impala rims, Hydroboost, Recaros, MOMO/wood SW w/QR, custom wood shift knob, Pioneer DEH P77DH
1992 OCC now with 5.7 tbi, DEH P77DH
For a parts list, check https://www.impalassforum.com/vBulle...ion-parts.html