My 95 Cadillac deville back brakes lock everytime I put it in to reverse what can cause it

SOURCE: power door locks, electric fuel door and power

let me assume u have not checked the fuses, meaning in al places the fuses are!, try,under the hood,under the dash and behind the panel behind the rear seat in the trunk, look in your owners manual for these locations and the particular fuse u have trouble with. good luck,hope we helped!

SOURCE: locked out of the trunk 94 cadillac deville

Is there a trunk release button in the glovebox?

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: 2001 cadillac deville theft lock on after replaced battery help!

IF when you purchased your car you didn't set your own personal code you will have to take this to your local GM dealer and they can pull the code that is set at the factory and unlock your radio.THe proceedure for setting your own code then unlocking radio is in your owners manual.The dealership I worked for did this for free.

SOURCE: brakes lines rusted on a 97 cadillac deville

Metal brake lines rust with age, become potted & leak fluid. Replace with copper pipe, is only marginally more expensive, the labour to replace will be the same but copper wont rust, so future cost saving & safety. Job is easy enough to do yourself, unscrew where it joins master cylinder, then follow line back, clipping it out from any securing clips, unscrew other end, coil up & take to motorfactors, ask them to make a copper brakepipe exactly like your old one, dont worry if you snap pipe during removal, take all bits with you so correct length can be gauged. Copper is very flexible & can be bent to shape when you refit. Make sure you have new brake fluid to bleed your system with after replacement.
Have fun.