02 Yukon Rear Defroster Wiring

Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=145180
Printed Date: May 02, 2025 at 6:47 PM

Topic: 02 Yukon Rear Defroster Wiring

Posted By: jstoddard
Subject: 02 Yukon Rear Defroster Wiring
Date Posted: January 23, 2019 at 10:14 AM

Does anyone know if there is a wire from the hvac control panel to the bcm that I can send a pulse signal to to turn on the rear defrost or is it all controlled in the panel? I would like it to work the same from the remote start as if the button on the control panel was pushed.

Replies:

Posted By: lurch228
Date Posted: January 24, 2019 at 9:47 PM

What you want will require connecting directly to the circuit board for the OEM switch. Mimicking the press of the switch to close the factory connections. Others have done it on here! https://www.the12volt.com/installbay/forum_posts.asp?tid=144319

Posted By: mgoetz74
Date Posted: January 30, 2019 at 1:24 PM

the rear defrost and also mirror defrost is just a white wire -latched at the ac controls. should come on 15 seconds after its remote started. Seats are another animal if you don't have a bypass module that turns them automatically

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33 years as a installer now just a retired old guy. Favorite thing to install/topic are remote starts/car alarms. Stop using test lights!!!

Posted By: jstoddard
Date Posted: January 31, 2019 at 6:37 AM

Thanks for the info. I havne't gotten around to it yet, but I'm going to wire it the way lurch228 did in the link posted.

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