How do I release a stuck on emergency park brake?

SOURCE: How do I reinstall the parking brakes on my 2001 GMC Jimmy.

hi from the uk not too conversant with your model ? BUT here in uk the same type of rear calipers for hydraulic disc brakes and a seperate set of brake shoes operate the park brake/s which is internal of the rotor ?? thebrake shoes will have an adjuster manually adjustment when rotor/drum is in place ? so if you look at the area between the top of shoes you may see a threaded rod with a serrated round wheel which when turned on thread will move shoes out one way and in the other ? so to fit rotor you must rotate this wheel so shoes close up enableing to fit rotor/drum over shoes easily ? then secure rotor with screws?? if fitted then you adjust ppark brake shoes by turning with a flat screwdriver via a hole which is/should? be in rotor and will turn in line with this adjuster? tighten brake on then turn back notch by notch till rotor turns free or just? do this b4 you fit the disc pads then repeat on other brake assy on other side? re assemble discpads and pump brakes till hard this then leaves the park brake cable to adjust if req'd if so pull p/brake it should come up approx 4 or 5 clicks to fully lock of brake this allows for what is known as reserve travel left on cable to apply as brake shoes wear ok? hope this helps?

SOURCE: Emergency Brake Adjustment

Ahh they are a real pain in the **** you need to remove the rear wheels calipers caliper anchors then the rotors and then you can adujust the park brake shoes up just untill you feel a bit of drag on the rotor then back them off a bit. Other wise you need to buy the tools to check the adjustment bottom line they are a pain

SOURCE: Parking Brake on, Under dash release cable broken

Can you get to any part of the cable? If so, use a pair of pliers to release it until you can replace the cable.

SOURCE: shifter is stuck in park

the shift interlock solenoid is probably bad

SOURCE: Park Brake Adjustment

Park Brake Adjustment (Disc Brake)

Tools Required

j 21177-A Drum-to-Brake Shoe Clearance Gage

Park Brake Shoe Adjustment

Caution: Refer to Brake Dust Caution.

Important: The park brake shoes must be adjusted before the park brake cable tension is adjusted.Set the J 21177-A so it contacts the inside diameter of the rotor

1. Position the J 21177-A over the shoe and the lining at the widest point.
2. Turn the adjuster nut until the lining just contacts the J 21177-A. Park brake shoe to brake rotor clearance: 0.6604 mm (0.026 in)
3. Repeat steps 1-3 for the opposite side.

1. Verify the self adjuster lock-out pin has been removed.
2. Fully apply and release the park brake pedal 3 times.