cujmh69

I have a strange problem. I recently bought a 2000 LS. I noticed that as long as the truck is running, my headlights, taillights and dashlights are always on. They never shut off. Turning the headlight switch does nothing. Has anyone ever encoutered this problem?

billibong

Blazers are equipped with Daytime Running Lights, and an automatic switch that turns them on all the time. Additionally, our trucks have a low light sensor that turns on the headlights automatically in low light conditions - nighttime, raining and overcast, etc.
This is normal for GM Vehicles made since the late 90's.

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billibong
99 4X4 Blazer LS Vin W
Repairs:
U/L Ball Joints, I/O Tie Rod Ends, New Tie Rod Adjusting Sleeves, New Idler Arm, R & L Front Hubs, R & L Upper CA Bushings, New Gabriel Ultramax Shocks (what a difference)
F & R Brakes and Rotors at 110,000.
Infinity Speakers to replace the blown factory sets.
162K+ and still kicking.

cujmh69

Yes, I am aware of both the Daytime Running lights and the low light sensor. However, they will not even shut off during a bright sunny day. They just never shut off. No matter which position the light switch is at, they remain on. It is very annoying and I do not want to replace headlights and taillights constantly.

Eslhockey92g

i thought you have to push the dome over ride button like 3 times and you will here a chime. i think that shuts them off, i forget my buddy did it to his extrmee every time but that was a while ago i dont remeber exactly

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http://www.cardomain.com/ride/783126

billibong

I would start looking at the relays and switches associated with the DRLs nad check to make sure that they are operating properly. It sounds like it could be a bad relay or perhaps the sensor has failed in an always on position.

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billibong
99 4X4 Blazer LS Vin W
Repairs:
U/L Ball Joints, I/O Tie Rod Ends, New Tie Rod Adjusting Sleeves, New Idler Arm, R & L Front Hubs, R & L Upper CA Bushings, New Gabriel Ultramax Shocks (what a difference)
F & R Brakes and Rotors at 110,000.
Infinity Speakers to replace the blown factory sets.
162K+ and still kicking.