Question about 2004 GMC Canyon

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Door ajar alarm stays on ...

Driving down the highway and the door ajar went off. I have taken apart the plunger switches and checked the wires for loose connections ... nothing. I have check the fuses and relays ... nothing. I have disconnected the battery ... nothing. Any ideas?

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  • joshuabeeche Apr 22, 2009

    when i lock the doors with my remote the horn beeps a few times, and wont lock till i press it a second time... it never did this before...??? and now when im driving the DIC indicates that doors are open??

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  • 42 Answers

You probably have a screw in a wire that grounds the connection turning the light on. The white wire will be the one that the screw is in. The orange wire is a 12 volt wire so it can't be shorted because of a blown fuse.

Posted on Dec 23, 2008

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Hello melvin... When the light stays on it usually means a door is open or the switch on a door or liftgate/trunk is bad. If the door adjar button is seperate from the latch assembly I pull the switch from the body and jump it out. Go one by one and you will find the failed switch. If the switches check ok and the connector is jumped and the light is still on then there is an open in the wires for the door ajar switch
Here are more procedures for troubleshooting...

Possible causes are :
1. Door switches stuck in closed position. Remove the rubber cover and loosen the screw holding the door switch. Pull out switch and check if the light stays on....if light remains on, fault is not with switches.

2. Anti-theft system ECU shorted. One of the wire goes to the alarm control unit. Unplug the alarm unit, if equipped and test.

3. Shorted interior dome light. If dome light is not working in the door ajar mode, remove the dome light and unplug the connector. If indicator light does not go off, fault is not with dome light.

4. Shorted Red/White wire. This would be the most difficult to diagnose as the shorting can be anywhere between the door switches to the indicator light. If you had done any wiring repairs prior to this happening, backtrack to check if any part of the wire is exposed and grounding

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if that does not fix it-a gm dealer with a tech 2 scanner should be able to located which door ajar switch is bad.

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Hi,
This seems that either of the door switches is/are faulty. Try pushing the switches fully on each plunger switch on each door individually, keeping the other doors closed while you do. See if one of them causes the light to go out. If you do find one turns the light off, it's an adjustment problem with the plunger switch. May still need to be replaced if it won't depress enough with the door closing to turn off.Let us know if you were looking for something more else please accept the suggestion.
Thank You for contacting Fixya.com

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