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creaking
sound of door with rusty hinges
Creak
sqweek
Lift up the handle and pull. ;) (If you're asking about unlocking and opening a particular model, make and year of Cadillac, then you might want to provide a few detail ... just sayin') :)
You will need a "2 6" or 30" wide door. Make sure your rough opening height is around 82 1/2".
Because when you slam the door the door makes vibrations and sounds are made by vibrations.
slam
Make your rough opening 2 1/2 inches larger on the width and height.
I hope this doesn't sound too stupid: VERY FIRST THING TO DO: open the door from the outside and look on the jamb of the door for the child-proof lock switch. Make sure it is in the correct position. It may be set in the the position that disables the interior door handle which keeps kids from opening the door and falling out while the vehicle is in motion.
make sure your door shims are not worn out,....open the door half way and lift the door up, if you feel slight movement or looseness in the door you may have to replace the shims
because the handbrake is a ratchet mechanism. the sound is the pin moving along the teeth. depressing the button and lifting stops this sound