[SOLVED] Headlights wont turn off - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 09-27-2009, 02:59 PM
Big Ern Big Ern is offline
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2003 Chevy TrailBlazer LT EXT
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Headlights wont turn off

My 2003 TB battery died - must have had something left on, only clicks on attempting to start, but the weird thing is that the headlights turned on by themselves with the switch off, and will not turn on or off. Anyone see this before? If so, what is the fix? I have my duramax van hooked to it now for jump starting, as the batt is low enough that the charger won't even send it a charge.

Thanks for the help
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  #2  
Old 09-27-2009, 03:10 PM
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Relay stuck in on position. You need a new one

Hi-beam is relay # 43

Low-beam is relay # 46

Both are in the underhood fuse panel.
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Old 09-27-2009, 03:26 PM
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Old 09-27-2009, 04:30 PM
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Ray, you forgot your reading glasses. It's #46 for the low beam. I fixed it.
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Old 09-27-2009, 05:27 PM
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Quote:
Originally Posted by the roadie View Post
Ray, you forgot your reading glasses. It's #46 for the low beam. I fixed it.
Thanks Bill, must have been the rum and ginger
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Old 09-27-2009, 05:54 PM
Big Ern Big Ern is offline
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Thanks guys - after the truck started and the battery charged, the lights started working normally again.
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Old 09-27-2009, 06:30 PM
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Big Ern, you can mark this thread solved I do believe :O)
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Old 01-26-2012, 12:42 AM
Old Blue Old Blue is offline
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i just started having this problem today. would it also be the relay if i have hids.
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Old 06-08-2013, 02:47 PM
suzgonz suzgonz is offline
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Thank you

Just had that issue with my Envoy...and you were right... It was the fuse! Thanks so much!!!
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Old 06-11-2013, 09:50 AM
hpmccut hpmccut is offline
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Automatic Headlights turn on while vehicle is off....

Have a different problem I have never run in to before.... My headlights randomly come on while the Trailblazer is parked! Here is the background so far:

Came out of work last night to find a dead battery. Jumped it, and put it on the charger when I got home. The headlights were off.

Went out with my wife in her car, leaving the charger on automatic for an hour. When we got home, the lights on the TB were ON. Flicked a couple of the switches and they went off. Let the battery recharge again without the light coming on, and disconnected the battery for the night.

Drove the TB to work this morning, and parked it facing my office window where I could see it. Lights went off after the standard delay when the car was shut off. 45 minutes later, I noticed the lights were ON! Flicked the high beam switch on the steering column once to engage them, and the low beams shut off.

Other notes: Its been cloudy & rainy the past 2 days in that area, so the general light level is lower. Also, I just passed 200,000 miles a week ago, but I didn't celebrate so maybe it is just being cranky.....

Any insight as to were to look at the fuse/electrical system would be greatly appreciated!
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