Question about 2003 Chevrolet Silverado 2500HD

Open Question

Headlights only work when key turned off

Parking lights work properly but headlights will not come on until I turn truck off during the delay before all lights shut down. They will not work in auto or manual mode but the lights themselves are fine and have power to them once ignition is turned off.

Posted by on

6 Suggested Answers

hdpanama
  • 65 Answers

SOURCE: CHEVY 1500 TRUCK HEADLIGHTS TURN OFF WHEN YOU TURN ON SWITCH

If you have replaced the switch, and it is still doing it it sounds like you definately have a short somewhere in your wiring. On the other hand if the dimmer is in the turn signal arm ( forward bright back dim ) the problem could also be there in the dimmer switch, such as a short being caused by that dimmer switch being faulty.Auto Zone and Discount Auto Parts both test a lot of your electrical problems for free, and/or may have some knowledge to more accurately pin point the problem. Not sure about Pep Boys or some of the other discount auto part chains.

Posted on Nov 18, 2008

MrScary66613
  • 1990 Answers

SOURCE: Delay and low range wiper setting do not work on my 2001 1/2 TRK

Chevy has had Problems with the Wiper Motors on these Trucks for a Long time now. On some Models they Issued Recalls. On My 95' I just Replaced the Wiper Motor and have had NO Problems Since!

Posted on Dec 31, 2008

  • 52 Answers

SOURCE: headlights won't work 95 jeep cherokee

head lamp switch is bad or came unplugged

Posted on Feb 14, 2009

  • 1 Answer

SOURCE: headlights wont come on, but parking lights work...i dont get it

Was sent in by another poster, just posting his results which fixed mine. Problem was relay $50.00 at GM only.

Check the relay module. 45 or 46. on the engine relay block. you can swap the two they are the same part number, then you will know. Dont start the engine, just check the lights. If it works replace the relay module. You may have to order the part from the parts store. Or go to the dealer to get it.

Posted on Mar 25, 2009

  • 3600 Answers

SOURCE: 1981 chevy truck headlights not working

Replace light switch. Reach under the dash and find the switch you will feel a button on top of the wight switch push it down pull the switch knob all the way out, (Unhook battery first) then unscrew the beauty ring then pull the switch down and then remove wire connector and go buy a new one and replace it. if your a big guy it may give you a problem, but replace it before it burns up your wiring harness.

Posted on May 30, 2009

co7196
  • 3433 Answers

SOURCE: My 98 Chevy Cavalier will not 'crank/turnover'

If the lights dim, its the starter, If they go out, you have a bAD BATTERY CONNECTION. This cranking with lights on . It may be neutral safety swith, May be clutch safety if manual trans. I'd go for the battery connection is poor. Ck the ground/neg first.

Posted on Jul 02, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why will the headlights not turn off when ignition is turned off?


I will fill in the blanks....you must have a newer car with auto head lights....there is a setting on the headlight switch that lets you over ride the "automatic" headlight mode....maybe you or someone accidently turned it to the manual "on" position...if so turn it back to the "auto" setting......2nd....new cars do have a delay before the headlights go out after parking your car. And if you read your manual, you would see that the time they stay on after turning your ignition key off can be set to several different time settings, including to switch off as soon as you turn the key off.
But if you had accidently turned the light switch to the "on" setting.... fear not....the headlights will automatically go off after the battery is dead....lol....actually they should go off within 2-3 minutes of turning the key off...unless you have an open door or trunk...or engine hood...or maybe even a gas cap door...and your car is telling you "something's open" by the lights staying on....Take that Jim and see if it gets you anywhere.

Mar 12, 2015 | Cars & Trucks

2 Answers

How to find an electrical disturbance in 1998 ford expedition


Normally this condition is the result of a poor body ground connection. Testing for this can be deceiving. At the static(nothing on) condition, testing can show a good ground. However when a circuit is excited, it has a determined resistance and a set current flow. If the ground connection to this or a branch circuit is loose, corroded, or broken wire. This will allow just enough connection to show as being good, but not good enough to complete the circuit with the required amount of connection when energized.

Nov 30, 2014 | 1998 Ford Expedition

1 Answer

I have a 92' Park Avenue that the headlights turn off sometimes and sometimes they don't. Where would the delay switch be if it has one? I'm going to check out the relay switch next, I g


Cant say for sure, but you may be laying something on the sensor that turns the lights on, and causing car to think its night time, and turning on lights. The sensor that controls this is on dash ,drivers side near windsheild.

Feb 22, 2013 | 1992 Buick Park Avenue

1 Answer

1992 buick park avenue headlights stay on


Is there a delay control for the lights? It might have been moved from the original position you had it in initially

Jun 21, 2012 | 1992 Buick Park Avenue

1 Answer

Where is the headlight delay module located on a 2000 jeep cherokee


If your delay module is working correctly, you should be able to turn your headlights off first, then shut the engine off and by then, all lights will go off. never need to use my delay unit always shut headlights off then the engine.

May 04, 2012 | 2000 Jeep Cherokee

1 Answer

Can I program the automatic headlights to always shut off when the ignition is shut off - day or night?


I have a 1997 cadillac deville that has both 'daytime running lamps' when put into gear and 'twilight sentinel' which turns the headlamps and parking lamps on at night, and goes off during the day or when it is bright enough.

There is an adjustable delay for the twilight sentinel to turn the headlights off after the ignition key is removed and it is night time.
---
I had the 'daytime running lamps' installed on a 1990 Cadillac Deville that turns the headlamps only on when the ignition key is switched to on with an aftermarket module. The headlamps are about 70% or so as bright as the regular twiilight sentinel headlamps and parking lights and are designed to go on during the day.

The twilight sentinel overrides this feature when it gets dark outside.

I had the daytime running lamps installed by an auto electric shop that specializes in electrical systems, alarms, stereos, etc.

Does this help?

Jul 10, 2010 | 1998 Buick LeSabre

3 Answers

I have a 93 Mercury Grand Marquis and the headlights randomly turn off and on, does anyone know how to solve this?


There are 3 components for the headlights in your dash. The headlight switch, the delay switch, and the autolamp light sensor. If you have the lights manually turned on, without the autolamp position on the switch being on, then the headlight switch is a simple off-on switch.
If the headlight switch is manually on and the lights are cutting out the problem is either the fusible links or bad contacts in the light switch.
If you are using the autolamp position on the light switch, this is a different circuit. The autolamp system needs the light sensor to work. If the light sensor is dangling under the tiny slots in the dash every bump you hit will shake it. Or it can be a broken filament in the light sensor. To test, just eliminate the circuit by using only the manual off-on side of your light switch.

A loose power wire to the light switch (or ground) will affect BOTH the manual and automatic settings. But if the manual setting always works, then its the automatic parts that are broken. The delay switch does not work until after the ignition is off so it can not be the problem while you are driving.

Dec 27, 2009 | 1993 Mercury Grand Marquis

1 Answer

Parking lights stay on when the key is turned off


there are more wires that you cannot see that are melted that is causing the problem. trace all of your wires, starting with the license plate light, all the way to the headlights

Feb 16, 2009 | 2001 Ford Focus

1 Answer

1995 Buick Lesabre


Left of the two headlight buttons for headlights and parking, there is a vertical slider. It's labeled Twilight, meaning twilight sentinel that keeps the headlights on. Move it down and that shortens the on time to about 5 seconds. If you are sittting with the headlights on and want them to go off, push it to the bottom and it turns the lights off immediately. They will turn back on when the car is put into park.

Move the slider to the top and they should stay on for about 5 minutes. BTW if you just leave the headlight switch pushed in (if you're doing it manually) the car turns everything off in about 10 minutes--inside lights, radio, lights, cigarette lighter power (unless you moved the fuse in the underhood fuse block to make them stay on permanently).

You also may not know that if you are driving or sitting and want the headlights off but the parking lights to stay on, push the Parking LIghts button. That turns the headlights off. I didn't find that for a while because our 98 LeSabre didn't have any way to turn off the headlights while cruising through a Christmas display scene in a park where many people turn off the headlights to help the effect of the colored lights. Please Rate My Response! Thanks!
//

Feb 05, 2009 | 1996 Oldsmobile Eighty Eight

1 Answer

Lights


Some vehicles don't have the ability to turn the headlights off when the parking brake is not set. Its part of a safety feature that they call "Day-Time Running Lights" usually, or something to that effect. Generally it makes sure that you can't forget to turn on your headlights, and they see it as "Well, during the day, it makes you more visible, which is safer."

However, as far as turning the headlights off without the parking brake applied. Again, on some vehicles, there is no way to turn them off separately.

May 16, 2008 | 2007 Volkswagen Jetta 2.5 Sedan

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

41 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...