Drivers Window and Door Locks Not Working

K0PIR · Aug 16, 2018

Well I found the culprit this time the connectors inside the driver side door need to be replaced. Anyone know the part numbers? Both connectors, see pics. I'm not sure how it's going to be replaced, but if I get the parts I'm sure I'll be able to figure it out with some help.

Thanks.

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ludevick · Aug 16, 2018

15326840 I believe, however, it’s showing as discontinued so might take some searching around

K0PIR · Aug 16, 2018

Yeah I can't find it at GMPartsDirect.com

K0PIR · Aug 16, 2018

In the meantime, my drivers window is half way up. How can I pull it all the way up? I suppose I can take the door panel off and see what's holding it in. Any ideas?

Thanks.

4speedfunk · Aug 17, 2018

Hose down the connectors and terminals with WD-40 or some aerosol contact cleaner, and plug em back in. They might just be corroded. If you get em to work...unplug em again and use some No-Ox paste on them.

K0PIR · Aug 17, 2018

I thought the same, but at least two pins are broken off.

4speedfunk · Aug 17, 2018

Damn. Looks like a junkyard item.

JPaul · Aug 17, 2018

I haven't looked recently, but I have seen the entire harness from inside the doors for sale on Ebay in the past. Could check there as well.

lsv_palana · Aug 17, 2018

cut wires that lead to broken pins and connect them via another connector (2 or 3 wires).. i am always do this. work great.. gm connectors - maded very bad.. i use old ones fron japan cars..

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K0PIR · Aug 17, 2018

I'm checking junk yards. Ebay has passenger door, not drivers door unfortunately. Will rewire if I can't find it.

Can that window be locked into place so it's all the way up?

Thanks.

f5moab · Aug 17, 2018

You can easily replace the pins.
To get the motor to raise the window, pull of the door panel, access the window motor and ground the brown wire and apply 12 volts to the d/blue wire. That should raise the window. If not reverse the wiring.
You can do it via the connector but not sure of the pinout numbers.
Door panel not hard to pull off. Then to make sure you don't lower it again, just leave the window motor disconnected.

K0PIR · Aug 18, 2018

f5moab said:
You can easily replace the pins.
To get the motor to raise the window, pull of the door panel, access the window motor and ground the brown wire and apply 12 volts to the d/blue wire. That should raise the window. If not reverse the wiring.
You can do it via the connector but not sure of the pinout numbers.
Door panel not hard to pull off. Then to make sure you don't lower it again, just leave the window motor disconnected.

Hey, thanks. I was wondering about that. I'll raise the window that way.

When you say replace the pins, are you referring to the pins in the connector that are corroded and broken?

Thanks again!

f5moab · Aug 19, 2018

At one time, GM's connector pins were available and usually quite easy to replace. A kit included the small tools that allowed the pin to be backed out of the connector. I'm assuming they are still available since I have to believe that GM's connectors and pins are designed the same now as they were.
Personally, have no idea what the costs would be for a kit, since anything I needed was "free" to me.

As for a replacement connector. GM was notorious for changing part numbers on just about everything so I would check with a dealer. All dealers should have access to Hummer parts and part numbers/manuals. It's all electronic.

K0PIR · Aug 22, 2018

Do you know which wire controls the locks? The rear door (tailgate) is locked.

Any help is greatly appreciated.

Thanks.

lowtrac · Aug 24, 2018

I have a similar problem brewing but I’m still able to poke the door end of the cable and get it working again when it stops. Is there a special way to get that plug disconnected from the door? I can move the grey lever up and down but can’t seem to get the harness to disengage from the door.

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K0PIR · Aug 24, 2018

lowtrac said:
I have a similar problem brewing but I’m still able to poke the door end of the cable and get it working again when it stops. Is there a special way to get that plug disconnected from the door? I can move the grey lever up and down but can’t seem to get the harness to disengage from the door.

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Yeah I had the same trouble disconnecting it. That lever has to be all the way up, vertically. Then I was able to disconnect it.

So, my rear door (tailgate) is locked. Unlike the side doors, there no manual lever. How can I unlock it so I can access the rear?

TIA.

lowtrac · Aug 24, 2018

Take a look at page 70 of this document:

https://schwarttzy.com/wp-content/uploads/2013/01/Hummer-H3-Wiring-2007-1-4.pdf

It looks like there’s a tan wire (number 5) coming out of the driver’s door switch plate. I wonder if you can trace that wire back through the harness into the vehicle and put 12v on it. It seems that it should unlock all the doors. Maybe somebody else more knowledgeable will chime in.

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K0PIR · Aug 24, 2018

There might be a latch inside the door where the tire jack is, but mine will be hard to get too because I have built a shelf back there and I have drawers up against it.

lowtrac · Aug 24, 2018

I don’t think there is, but it may be easier to get to the wiring harness back there than to try to track it down under the dash.

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K0PIR · Aug 25, 2018

I haven't tried yet. On one of those fix-it websites, someone claimed there is a latch, but those websites are mainly click bait and don't help very often.

Before I crawl back there, does anyone know if there is a manual latch on the rear door?

TIA

lowtrac · Aug 26, 2018

If you don’t have an answer by the time I get home this afternoon, I’ll look at mine and see what I can find.

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Army Retired · Aug 26, 2018

What a pain in the Ass !!!!!!!!!

lowtrac · Aug 26, 2018

There doesn’t appear to be a manual latch.

I have an idea though.

Notice the wiring harness going to the door lock:

There’s a tan and grey wire. According to the wiring diagram, the grey wire comes from the “all doors lock ctrl” and the tan wire comes from the “all doors unlock ctrl.”

That harness comes up to the center of the door and passes just under the wiper motor.

I stripped a bit of insulation to make sure the colors match.

Unplug the harness from the wiper control. If you turn the ignition switch on and turn the rear wiper control to 1, there is 12v on the yellow wire.

I suspect if you strip some insulation from the tan wire going to the door lock and use a jumper to touch that yellow wire’s 12v contact to the tan wire it’ll unlock. I didn’t test it though.

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K0PIR · Aug 26, 2018

I was able to roll up the window just by applying 12v to the dark blue wire in the wiring harness that goes to the window switch in the drivers door.

Getting to the rear door and that panel is almost impossible with my setup. I wonder if it can be done from somewhere else???

Yeah GM really dropped the ball on this.

Thanks Lowtrac for the photos. I'll have to see if I can get to it there is nothing else I can do.

Korby7 · Aug 27, 2018

Thinking of putting a momentary switch hidden inside the rear door or cargo area just in case this happens to me.

Drivers Window and Door Locks Not Working

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