Electric Parking Brake question - TerrainForum.net: GMC Terrain Forum
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post #1 of 21 (permalink) Old 10-22-2018, 01:36 AM Thread Starter
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Electric Parking Brake question

I have a new '18 Equinox with the Electric Parking Brake. If the mechanism failed or failed to get power, is there a way to manually release the parking brake?
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post #2 of 21 (permalink) Old 10-22-2018, 09:11 AM
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Excellent question. Hopefully, when there is no power to the motor or solenoid that engages the brakes, it will disengage, such that pulling a fuse, would release the emergency brake. I'll have to look for a fuse, to see if my theory is correct.

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post #3 of 21 (permalink) Old 10-22-2018, 12:47 PM
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No. If the battery fails and the electric parking brake is set, it will remain set. You can open the hood, apply a set of jumper cables from a good battery, then release the electric parking brake.
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post #4 of 21 (permalink) Old 10-22-2018, 04:58 PM
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If the mechanism failed, it would be the same as if a caliper seized on. No way to release it.

From what I've seen, the unit is sealed quite well. I don't think it's going to be an issue for quite awhile.

Now - 2018 Equinox 2LT 2.0T AWD
Was - 2015 Equinox 1LT 3.6 AWD
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post #5 of 21 (permalink) Old 10-22-2018, 10:03 PM
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Originally Posted by mcg75 View Post
If the mechanism failed, it would be the same as if a caliper seized on. No way to release it.

From what I've seen, the unit is sealed quite well. I don't think it's going to be an issue for quite awhile.
So towing is the only resort if something happens (as recommended by the manual)

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post #6 of 21 (permalink) Old 08-20-2019, 03:11 PM
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I have a 2019 Equinox, right side park brake is stuck on. Dealer states there is no way to manually release the park brake if it is stuck on. This is 3rd time we brought the vehicle in for park brake service - about 3000 miles on the vehicle. This time the vehicle is sitting at dealership for 4 days so far.
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post #7 of 21 (permalink) Old 08-20-2019, 05:24 PM
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There are two ways of releasing the parking brake.

One is with an appropriate scan tool and select Parking Brake Service Mode.

Two obviously if you don't have the above, there is still another way to do it.

Naturally take all obvious steps to ensure safety when working on a lifted vehicle. The following is for the Parking Brake Actuator fails or loss of electrical power.
On the side that is 'locked' remove the parking brake actuator which is attached to the caliper by two bolts. Once removed insert a hex bit of the proper size into the piston and rotate clockwise to retract the piston.

You can replace the actuator without replacing the caliper. Also when done on both methods, Park Brake Calibration is required. This is done by the scan tool, the shop manual does not call out a manual way to do that if its even necessary.

Hope this helps.. By the way only for 18 and 19 and any other 'electrical' parking brake vehicle that GM has.
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post #8 of 21 (permalink) Old 08-22-2019, 03:08 PM
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Quote:
Originally Posted by Eekwinox View Post
I have a 2019 Equinox, right side park brake is stuck on. Dealer states there is no way to manually release the park brake if it is stuck on. This is 3rd time we brought the vehicle in for park brake service - about 3000 miles on the vehicle. This time the vehicle is sitting at dealership for 4 days so far.
6 days. Still not fixed. At least I have a loaner.
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post #9 of 21 (permalink) Old 08-22-2019, 03:17 PM
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6 days. Still not fixed. At least I have a loaner.
Progress!: wiggle test reveals a broken circuit in the wire harness. Now waiting for replacement harness.
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post #10 of 21 (permalink) Old 08-27-2019, 02:04 PM
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Progress!: wiggle test reveals a broken circuit in the wire harness. Now waiting for replacement harness.
11 days. Wiring harness on backorder. No estimated delivery date.
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