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Chevy Tahoe/GMC Yukon Hybrid Electrical and Lighting Questions

13 messages,  Last post on Oct 18, 2009 at 6:41 PM

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What is this discussion about? Chevrolet Tahoe Hybrid, GMC Yukon Hybrid, Electrical, SUV

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#1 of 13 Trailer Brake Light Problem by seedyn Jun 21, 2007 (1:46 pm)
I own a 2003 Tahoe with a factory towing kit. I recently hooked up my travel trailer and noticed the trailer brake lights did not work. The Turn Signals work, the backup lights work, also the running lights work. I replaced the bulbs and it did not help. I decided to try my little landscape trailer and I have the same problem. I then measured with a voltmeter and found that I was not getting 12 volts on the right and left signal pins at the connector on the Tahoe (7 pin). I saw the voltage rise when using the turn indicators, but nothing when the brakes were engaged. The brakelights on the Tahoe work fine, as do all of the lights and signals. I am perplexed. Does anyone have any advice? Thanks Replies to this message: fitch8308 (Aug 07, 2007 10:07 am) spur3 (May 01, 2009 10:49 am) ctdeng0 (May 23, 2009 12:51 pm)
#2 of 13 Re: Trailer Brake Light Problem [seedyn] by fitch8308 Aug 07, 2007 (10:07 am)
Replying to: seedyn (Jun 21, 2007 1:46 pm) I also have a 2003 Tahoe and have the same problem but only with the Left Brake Light. Trailer lights work fine on my other truck. When I hooked up my trailer brake controller I bought the correct GM cable because the 2003 was different than previous years. Mine brake lights have worked for 4 years now, until now. Let me know if you get an answer. Replies to this message: spur3 (May 01, 2009 10:49 am) ctdeng0 (May 23, 2009 12:51 pm)
#3 of 13 Same thing by sharky146 Sep 10, 2007 (7:46 pm)
I have a 2004 Tahoe and my tail lights don't work on either of my 2 trailers. All the other lights seem to work fine.
#4 of 13 Trailer Brake Lights by fitch8308 Sep 27, 2007 (10:48 am)
I unplugged my trailer brake controller (Tekonsha Prodigy) and the brake lights worked. I plugged it back in and they still work. I don't know why.
#5 of 13 Let's make this one more generic by pf_flyer HOST Sep 27, 2007 (12:15 pm)
I'm going to rename this discussion to handle electrical and lighting issues with the Tahoe/Yukon hybrid. That way we we'll have all the electircal stuff in one palce and not a bunch of single question single answer topics.
#6 of 13 electrical problems or what by rickyh Nov 04, 2007 (7:38 am)
i own 1 1995 tahoe 2dr-4/4 350 auto.my problems is sometimes i go to start it up and the tach does not work and the transmission indactor lights is dim and is flashing and check gauges lite is dim and flashing.it starts up,i then put it in gear and it starts off in high gear.i have replaced the ecm.this happens intermittenly.please help Replies to this message: chadx (Nov 19, 2007 11:15 am)
#7 of 13 Re: electrical problems or what [rickyh] by chadx Nov 19, 2007 (11:15 am)
Replying to: rickyh (Nov 04, 2007 7:38 am) Let's keep in mind this is the Tahoe Hybrid forum. There are other forums for discussions on non-hybrid vehicles and you'll probably get many more views and a better chance of a response.
#8 of 13 2005 Tahoe fan switch by tommyd6 Sep 02, 2008 (6:33 am)
My #5 speed on the fan switch stopped working. I replaced the blower resistor with negative results. I heard that it might be a in-line fuse under the dash but not for sure. Any help   Tommy D
#9 of 13 2003 chevy tahoe 4wd by rrwoodstock Dec 26, 2008 (4:50 am)
my service 4 wd message is showing on the screen. how do i service the 4wd or how much should it cost to get done? Also, my battery meter is moving past the highest point, i have changed my alternator and battery and checked both and they are working properly so what is causing this meter malfunction?
#10 of 13 Re: Trailer Brake Light Problem [fitch8308] by spur3 May 01, 2009 (10:49 am)
Replying to: fitch8308 (Aug 07, 2007 10:07 am) I have the same problem with a 2003 Tahoe, left turn and tested on three different trailers, neighbors truck operates all three fine. Was wondering if you were able to solve this problem and would share. Replies to this message: ctdeng0 (May 23, 2009 12:51 pm)

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