15 nox auto door lock/unlock - TerrainForum.net: GMC Terrain Forum
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post #1 of 26 (permalink) Old 04-13-2019, 05:14 PM Thread Starter
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15 nox auto door lock/unlock

My wife has a 2015 equinox and the automatic door lock/unlock suddenly stopped working. Manual lock/unlock functions of course. The car makes all the correct sounds and indications that the doors should lock/unlock but they do not.

So far:
I have replaced the under the hood relay/fuse box thinking it must be the PCB relay. That did not help.
Checked all the fuses in the cab and under the hood. No go, all good.
took off both front door skins thinking it may be an electrical issue. Moved/tugged on wires, Nada.

I am puzzled. both front door lock/unlock buttons seems to work. The delay lock makes a ding. The horn honks after all the doors are closed. Lights flash, the whole nine. But... the doors do not auto lock/unlock.

I do not have an electrical drawing to try and pinpoint what is missing. Is there a BCM that operates the doors?

Any help would be appreciated.

EDIT: Also, the locks do not operate using any of the interior lock/unlock buttons

Last edited by rkilling1; 04-13-2019 at 05:58 PM.
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post #2 of 26 (permalink) Old 04-13-2019, 10:47 PM
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How odd... Just curious, I presume the locking and/or unlocking still don't work from the App too, but that's one other thing to test...

-2015 Chevrolet Equinox SS 301HP V6
-1998 Chevrolet Camaro Z28 400.1 RWHP 6 Speed
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post #3 of 26 (permalink) Old 04-14-2019, 10:30 AM Thread Starter
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Quote:
Originally Posted by BandDirector View Post
How odd... Just curious, I presume the locking and/or unlocking still don't work from the App too, but that's one other thing to test...
Never used the app on this vehicle. I assume you need to pay for onstar in order to use the app features? Thx
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post #4 of 26 (permalink) Old 04-14-2019, 12:16 PM
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Yes the BCM controls the door locks.
Try going into your preferences on the radio and change the lock functions.
The BCM has several programs to change these auto functions.
See your owners manual for a description.

For the manual portion
The interior switch is an input to the BCM.
The BCM then outputs a signal to each lock solenoid.

2014 Equinox LTZ FWD 3.6L. V-6 (LFX)
GM6T70 Transmission-Gen II(M7W)
Crystal Red Tintcoat-Brownstone Leather-(FE2) Suspension-18" Wheels
Build Date: Nov. 04, 2013-Delivery Date: Nov. 25, 2013
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post #5 of 26 (permalink) Old 04-14-2019, 12:47 PM Thread Starter
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Quote:
Originally Posted by rednox301 View Post
Yes the BCM controls the door locks.
Try going into your preferences on the radio and change the lock functions.
The BCM has several programs to change these auto functions.
See your owners manual for a description.

For the manual portion
The interior switch is an input to the BCM.
The BCM then outputs a signal to each lock solenoid.
Changed the settings for both auto locks and remote locks via the config menu. No change in function.

Is the BCM that controls the locks the one located just behind the hood release?
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post #6 of 26 (permalink) Old 04-14-2019, 12:54 PM
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Originally Posted by rkilling1 View Post
Never used the app on this vehicle. I assume you need to pay for onstar in order to use the app features? Thx

Get the "my Chevrolet App" and enjoy remote starting, remote lock & unlock, and a few other features for free! When I first bought my '15 new, it came with 5 years of free usage of the OnStar App that had all those features. Then GM transitioned it from OnStar to the myChevrolet App. My 5 years will be up at the end of this year, but I'll be curious to see if now that it's not an OnStar feature any longer if I'll still be able to use the features in the App for free...


The remote start is especially nice during the summer. I've been at Disney in the middle of the park, but getting ready to park hop and I'll remote start the car with the AC on and it's nice and cool by the time I get out to my car! Great feature!

-2015 Chevrolet Equinox SS 301HP V6
-1998 Chevrolet Camaro Z28 400.1 RWHP 6 Speed
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post #7 of 26 (permalink) Old 04-14-2019, 05:43 PM
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A couple of things, if this is out of warranty then you can go online to ALLdata and get a subscription. I think you can get a monthly one or 3 months. I am not sure, I have only been able to get yearly for 16 bucks. With this you can get all the wiring and the pinpoint tests to narrow down the problem. You should also be able to use the my Chevrolet app as it was after April 30/18 that GM changed the policy. It might be worth a look. At the end of the day however you may need to use a MDI and GDS2 to narrow down the problem.
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post #8 of 26 (permalink) Old 04-14-2019, 07:32 PM Thread Starter
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Thx for the app info urban and band. I didnít realize it was an option. Got both of my vehicles being controlled by apps now.

The 15 nox DID lock/unlock via the app. What does that mean?

Thanks for the help thus far
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post #9 of 26 (permalink) Old 04-14-2019, 07:39 PM
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Quote:
Originally Posted by rkilling1 View Post
Thx for the app info urban and band. I didnít realize it was an option. Got both of my vehicles being controlled by apps now.

The 15 nox DID lock/unlock via the app. What does that mean?

Thanks for the help thus far
Glad I could help with the App. Enjoy, itís a nice perk from GM.

If everything works as it should from the App, then that tells me itís gotta be a setting somewhere...child locks activated or some other setting...

-2015 Chevrolet Equinox SS 301HP V6
-1998 Chevrolet Camaro Z28 400.1 RWHP 6 Speed
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post #10 of 26 (permalink) Old 04-14-2019, 07:43 PM
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Hit the kid lock button on and off and see if maybe the bulb is out and you don’t realize it’s activated.

If it’s on, it lights up in amber normally...but if the bulb is out, you would never know unless the problem you described starts happening.
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-2015 Chevrolet Equinox SS 301HP V6
-1998 Chevrolet Camaro Z28 400.1 RWHP 6 Speed

Last edited by BandDirector; 04-14-2019 at 07:47 PM.
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