It depends. You may need a new Brake harness. It's an electrical problem you have ti get it looked at.
It could be brake fluid, badly adjusted emergency brake sensor, some other problem with the brakes... a dealership code scanner can tell you what's wrong.
Normally, using the remote key should shut off the alarm on a Cadillac Catera. In the case that something is wrong with the remote, one can pull the fuse for the horn or unhook the battery momentarily.
Fuse
my back brake lights don't work, but the brake light on the back door does what could be wrong
whats wrong with them??
=I don't know about the brake lights. I know that most cars, when you turn it off and get out, the head lights and main backlights stays on for a while but then goes off. The brake lights? Maybe it's the way that car is or something is wrong with the brake or you have it on wrong.=
Maybe it is not connected properly or you bought the wrong type of bulb.
switch is going bad my friend eBay
wrong bulbs or bad earth
Check the brake switch at the pedal.
Blown fuse
It is important to pay attention to the warning lights on the dashboard. When the ABS and brake lights flask that means there is something wrong with the brake system.