Dumb question, How do I release parking brake on 88 DeVille? Thought there would be a lever somewhere but I can't find one Also, I've been told it needs premium gas. Is this true?

On my Cadillac ('98), if the vacuum release does not work there is a lever directly above the peddle that will manually release the parking brake. Follow the lever up and it should be in front near the pivot pin.

if you look at the top part of the parking brake you will see a lever take a screwdriver and pry up on the small lever and it should release

Please confirm its electronic or mechanical.
For mechanical when you push a bottom on parking lever it disengage the teeth of paul(gear ) and thus parking brake are released.

Hello: Look under the dash on the driver side, above the foot pedal for the park brake you will see the park brake assembly there will be a small lever possibly with a yellow tip. pull back on the lever and it should release the park brake.

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

there is a manual release on the park brake assembly I think yellow tip lever. The unit releaases automatic by vaccum, if there is vaccum to the release vaccum solenoid but it doesn't release you need a new solenoid

if you look at the pedal for the emergency brahe there is a small lever that will allow you to by-pass the vacuum operated release,check for vacuum at the hose that goes into the release

try putting the car in drive then back in park. should release brake.

FROM LUSTY KID:

Some cars release the emergency brake when you put them in drive, provided you have your foot on the brake first. naturally.

The other possibility, your brake cable is rusted or corroded inside the sleeve and is jammed so it will not release. You might need to replace the whole emergency cable.