I pushed my emergency brake down and now i can't get it back up

pushing down n back up on what? the fender? or the brake? we can't see what your doing you know. Give better word pics.

Push it all the way down again and release. Should disengage.

Hello, Look up under the dash next to the inside of the car, between the foot pedal for the park brake assembly, on the park brake assembly there should be a short lever, it may even be yellow on the end. pull it back toward you, that should release the park brake. The System is suppose to release automatically when you put the car in gear. It works off vacuum, the switch is mounted on top of the steering column and the actuator is mounted on the park brake assembly

theres 2 o2 sensors one is midway back down the exhuast and one is up by the exhuast manifold

the park brake must be fully released if not the light will come on w/key on eng off reach down and pull back on the park brake pedal if light don't go out then it may be the brake fluid level switch located on the bottom of the brake fluid reservior. the switches were a high failure rate

its just above the pedal, there should be a little lever that you can manually take the brake off in case the vauum can is bad or disconnected. the vac can is attached to that linkage.

You have a car that was built withh all the bells and whistles you know. The emergency parking brake is not so sophisticated at all. Cadillac installed a vacuum pod to the release actuating lever which conjoins to the shift bowl. When you aplly your foot on the brake to shift the emergency brakes will release automaticly. If it will not release, the vacuum pod is at fault & will need a replacement. They are inexpensive at any Cadillac dealerships parts department.

Yes they use a different flasher unit for the turn signals,

right above the foot emergency brake to the right is a little handle release pull that towards you and it will release

What model car? On my Cadillac the problem was the vacuum line to the release valve at the parking brake pedal. The problem can be the vacuum line, the release valve or the vacuum actuator for that release valve. Mine was on the steering column.