Emergency brake is stuck on - 2005 Pontiac Grand Prix

Never heard of a parking brake automatically engaging. It does suffer with sticking brake cables. Are you sure the driver didn't step on the parking brake pedal? It is what I would have done and I have practiced it a number of times! You press the pedal a second time to release it. It is a known issue that the cable sticks, especially if the parking brake is never used.

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Parking brake release cable snaps - Chevy Avalanche Fan Club of ...

chevyavalanchefanclub.com > ... > Problems: Brakes

24 posts - ‎16 authors
Went to release the parking brake on my 04 and the cable snapped. ... More like the end cap coming of the cable that attaches to the foot pedal. ..... Then I released the parking brake, pulled out the broken release cable/handle assembly, ...

How To Install Repair Replace Parking Brake Release ...

? 5:54
https://www.youtube.com/watch?v=qx0oGfV62NQ
Jun 23, 2011 - Uploaded by 1A Auto Parts
How To Install Repair Replace Parking Brake Release CableHandle ... or replace a broken or worn out parking brake release cable handle.

Emergency Brake Pedal Assembly & Stuck Brake Cable ...

? 10:13
https://www.youtube.com/watch?v=0jYfvthBzhU
Apr 17, 2014 - Uploaded by corgLLC
Emergency (Parking) Brake Pedal Assembly & Stuck Emergency (Parking) Rear Brake Cable The emergency ...

E-Brake Cable Broken? Stuck Emergency Brake... Help Please ' Chevy ...

www.tahoeyukonforum.com > ... > Engine & Drivetrain

There is another problem. It should not be stuck from a simple trans check. Make sure your emergency brake is off and not stuck on. This happens if you dont use emergency brake often.

More likely it's the adjustable switch under your brake pedal if your brake lights won't turn off. Emergency brake lever does not turn your brake lights on at all. If you are referring to your brake light on the dash, sometimes that is also an indication that your brake fluid is low. Emergency lever switch going bad is very rare.

It depends on where the cable is stuck.
You can disconnect it at the connection points, you have a front, center, and two rear cables. But if the cable is stuck at one of the brake drums, disconnecting it at the front or center connector won't free up the brake shoes.

The emergency brake does not affect the lighting or lights on your plates. This is an entirely different problem going on. On some vehicles, when you start them and put them in reverse the emergency brake pops out automatically. If this doesn't work, you will have to manually unlock the mechanism. As for the lights, the problem may be in your switch.

grip the end of the cable with vice grips and give it a pull.

Has the car been lying up for awhile without been driven.

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

Have you checked the fluid level in the master cylinder?