My Cadillac 1998 DeVille emergency brake is stuck

SOURCE: Parking brake stuck.

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

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

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

SOURCE: 1988 cadillac deville: can't get emergency brake to release

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

SOURCE: 1998 cadillac deville

try taking off your fuse panel cover, there should be a reset button in there.

SOURCE: 1998 cadillac deville fans not coming on starts

If your fans are not coming on then your engine is not receiving the signal that it is overheating. This can be caused by bad fans (unlikely they are both out) a bad relay, or coolant temperature sensor. I would start by checking or replacing the temperature sensor as it can become corroded which is what the PCM uses to turn the fans on. Many vehicles use two sensors, one for the gauge and the other for the ECU, make sure you check/replace the right one. It should be a cheaper part and if you are unsure then match the new one with its location; it should be on the intake manifold or near it, generally with one or two wires. I think you will find your problem as they are common failed parts.

Good luck!