Emergency brake pedal stuck and won't release on a 2011 chevrolet malibu

SOURCE: Emergency Brake

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.

SOURCE: 2005 malibu where is the brake light switch?

There isn't one.  This car has a "brake and throttle by wire" system and the brake light switch is inside of that.  You have a bad brake position sensor.  Figure $240 or so at a dealer.

SOURCE: emergency brake pedal will not stay down when i press it.

The parking brake actuator (the mechanism you press with your foot) works like a ratchet wrench. The pedal has a cresent shaped plate with teeth on it. It pivots on a mounting plate. There is a pawl with a small spring also on the backing plate. This pawl engages the teeth on the pedal assembly to hold the brake engaged (against the large return spring).
Stick your head under the dash and look carefully at the parking brake actuator mechanism. See why the pawl is not engaging the teeth on the pedal assembly. Most likely causes are that the release mechanism is jammed "on" or that the light spring which attaches to the pawl is missing (usually from being kicked by some one with large feet) View this mechanism on another GM vehicle with the same style parking brake if you suspect that parts are missing.
Charlie

SOURCE: 2000 pontiac emergency brake stuck. how do i

Are you in a Northern Climate were road salt is used during winter? The emergency brake problems I have encountered tend to be due to rust and corrosion accumulating on the wires and metal pivot points that operate the brake via the emergency handle on the center console.

Get underneath the car (chock the wheels---ALL FOUR! with bricks or large chunks of wood---be sure the car is in PARK!) and find the wire that connects to the handle of the brake---follow it to the rear brakes, and you will see a split where it goes to the L and R sides via a sliding clasp of steel that looks like a C, and has wires running over the top, and to each rear brake.

At this point, grab the wire on one side of it and PULL HARD several times, slack between pulls. Do this for each side---that should release the assembly, and the shoes from holding the drum.

After you have done this, lubricate the pivot points and the wire connection to the brake handle with TRI-FLOW (NOT WD-40)or another teflon based lubricant.

SOURCE: Emergency brake stuck, pedal release broken

What happens is the brake cables rust inside the cable sheath and then they won't slide easily. There's no good fix for this other than replacement. It's not easy to even find where they are stuck.It might be possible to find the end of the cables at the back wheels and pull the cables back---to release the tension