Headlights Tail and Brake Lights
Chevy Tahoe
1995-2005 Chevy Cavaliers

Why would the daytime running lights and highbeams not work?

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2015-07-17 17:33:02
2015-07-17 17:33:02

faulty drl module

Check the fuse.The fuse may be blown

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There is a fuse for these lights. I would highly recommend not doing this as it is illegal.

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Check the daytime running lights module. This item was defective in some vehicles in the early 90's, and when it failed the result was lights that would not turn off or they would be very dim when the vehicle was running. You can check for recalls at the dealer.

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If it's doing this while the vehicle is running, it would be because the daytime running light system of the Grand Am included the instrument panel lights. Prior to the daylight sensor becoming standard, on some GM products, only the headlights were part of the daytime running lights system, while on others, it included all the lights.

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the daytime running lites go out when you put the trans in park. they also go out when you depress the parking brake. i would start looking there.

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If the headlight that runs through the modulator first is out then the daytime running lights won't work. Change the bulb and the daytime lights should then work.

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It depends on where the vehicle was sold when new. In Canada it would have them, in most of the USA, no.

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Most likely no. The only ones with drl, would have been from Canada.

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there is a number of things that could cause this. here are a few easy ones to check. is the e-brake fully disengaged. are the bulbs burnt out. is the wiring harness plugged into the daytime lights bulbs and in good condition. if these check out, you may have a fault in the daytime running light module.

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It could be a number of things. First check all of the fuses. It could be the module which controls the lights but it needs to be checked out. There is also a relay for the daytime running lights on your car i would check into that if all fuses are good.

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Some makes of cars have their lights on all the time, usually if the manufacturer is Swedish, where daytime-running-lights (or DRL) are mandated by law. If you check the cars which have lights on during the day, you'll notice they'll be Volvo, Saab or some other Nordic manufacturer.

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i think, depending on the year, that problem is caused by a factory defect.

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I believe that would be Daytime Running Lights ( Canada in 1991 )

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If you are referring to the brake lights it is probably a bad brake light switch. Your vehicle may also have daytime running lights which would be on without the parking lights.

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If you mean the headlight switch, pulling it out once turns on the dash lights and turns off the daytime running lights, pulling it again turns on the headlights.

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Disconnecting a working light may make your car defectable under law. "All lights fitted to a vehicle must be working". So why would you want to disconnect the DRL's from a new vehicle??? == Daytime Running Lights (DRLs) are bright, white, forward-facing lights that improve the forward conspicuousness of vehicles in the daytime. They are usually activated automatically when the engine is running. NRMA Motoring & Services commissioned a study of DRLs in 2003 which suggested that they should be standard on all vehicles as they could save lives and prevent injuries by increasing vehicle visibility.

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On quite a few DTR systems, the lights *will* shut off, but only between 30 sec to a couple minutes after the ignition's been turned off.

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I believe it is under the dash on the pass side of van. If your daytime lights go on and off when driving it you better get it change >mine went out the security light came on and would not start.

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If You want them off and you have auto lights turn off the auto to OFF. But i would keep it on Auto because it is so much eayser to see during the day. Also if you have fog lights i would turn those on. They help alot at night.

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wires are connected opposite to what they should be in the switch

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The lights are automatic for your daytime running lights AND your regular head lights. There is a light sensor on your dash that knows when it get dark. When it's dark your headlights will automatically come on, daytime lights turn off and your dashboard lights will dim as a result, since you no longer need them to be that bright when it's dark. As far as the parking brake, it triggers your daytime lights to turn off, so when you disengage your parking brake, they will turn on for normal driving. All of this is a good thing because you never have to worry about turning your on/off...ever.


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