Question about 2003 Chevrolet Monte Carlo

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Headlights on all the time

Driving lights don't work, just head lights on all the time day and night

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  • Chevrolet Master
  • 14,036 Answers

Make sure you dont have headswitch on manual that will keep head lights on all the time.a bad automatic lamp relay will cause headlights stay on with engine off.

Posted on Dec 05, 2012

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Posted on Jan 02, 2017

  • 109 Answers

SOURCE: Headlights not working

they are called your running lights they are suppose to do that..

Posted on Dec 02, 2008

J-Chris Ward
  • 731 Answers

SOURCE: 2000 Chevrolet Silverado 1500 The

Check the emergency brake pedal and make sure it is not on a bit. When the emergency brake are applied the daytime running light go out.

Posted on Jan 30, 2011

  • 4803 Answers

SOURCE: I have s10 1998 2.4l

Your headlamps are controlled by you Body Control Module (BCM) The FIRST thing I would do is scan the BCM for fault codes. It is possible that the DRL relay is stuck in the ON position, which would override your request for regular driving lights, or the BCM may not be receiving the signal from the headlamp switch that you are requesting regulat=r driving lights. The ONLY way to find out for sure is to check the data in the BCM and operate the switch and see if the BCM changes the status of the "Headlamp Request" or "Headlamp Switch" PID. There are two relays on the headlamp circuits, one is for the POWER side of the headlamps and the other is for the GROUND side of the headlamp circuits. The BCM controls the ground side through the Multifunction Switch (dimmer, wiper, turn signal switch).
The headlamp switch controls the Power side relay and also sends voltage to the BCM to tell it that it has turned the power on to the headlamp power relay.

In any case, replacing parts without scanning the BCM is the EXPENSIVE way to go about performing this repair.

Posted on Jun 18, 2011

  • 140 Answers

SOURCE: i have a 2003 cavalier

Could be the socket if you look in the end and has a melted look it would not make a good connection on the light

Posted on Jun 27, 2011

  • 1243 Answers

SOURCE: Both Low beam headlights aren't working in my 2002

my suggestion is that you check/ replacr the HDM(headlight driver module) relay in the main fuse box located under the hood near the battery.

Posted on Jul 30, 2011

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My 2000 Toyota Corolla headlights will not turn on during the night, and stay on during the day

Your Corolla has daytime running lights (DRLs). A photocell determines whether it is day or night. Your DRLs turn on automatically in daytime without you operating the light control ("headlight") switch. Your DRLs are actually your headlights on low beam. At night, the photocell senses it is dark and disables the DRLs. When you set the light control ("headlight") switch to HEAD, the head relay closes and the headlights should turn on. Since they don't, I suggest opening the engine room junction block and checking the 40A MAIN fuse and the 10A LEFT HEAD (UPPER) and RIGHT HEAD (UPPER) fuses. In engine room relay block 5, check the 10A LH-LWR HEAD and RH-LWR HEAD fuses. Replace any blown fuses and the headlights should be working normally again

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1 Answer

Headlights don't work why?

Test the headlight switch as follows.
  • Move your car to a dark area, such as waiting until night or moving to a dark garage, to test your headlight switch.
  • 2Turn on your car, so you can see your dashboard lights. Note whether some of your dashboard lights fail to illuminate.

    • 3
  • Turn on your car's headlights. Note whether your car's headlights illuminate.
  • 4Press the high beam lever to activate your high beams. Note whether your high beams activate.
  • 5Put your car in "Park." Move to the back of the car. Note whether your parking lights are illuminated.
  • 6View any remaining driving lights, such as lights above the license plate. Note whether these lights come on.
    If more than one set of lights does not activate when you turn on the lights, you may need to replace your headlight switch. If only one set of lights does not turn on, try replacing the lightbulbs in that set and then retesting your car. If the lights still do not illuminate, you may need to replace your headlight switch.
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    My automatic headlights sometimes will come on by themselves when they're supposed to but most the time they don't. When they do however, they will only work for a couple days at a time and then, without...

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