Question about 1999 Chevrolet Silverado 1500

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1999 GMC Suburban DRL Work - Headlights/Highbeams Do Not

Previous posts lead me to believe there is a relay that needs to be replaced. I cannot find documentation in the manual that labels a relay controlling headlights. Where is this relay located? From previous posts, there is a 3 x 3 block on the left side of the fire wall. Is this under the hood or under the dash in the drivers compartment? Manual only shows "Lighting" in upper right hand corner of the box under the hood. Fuse #15 in the fuse panel located on the left side of the drivers dash is labeled "DRL Relay". Any further help is appreciated.

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  • tktgvr Mar 31, 2009

    My daytime runnings lights do not work.. The DRL indicator is on in the dashboard...but the lights are not on......Where can I get free wiring diagrams or locate the involved parts in the vehicle????

  • Anonymous Mar 23, 2014

    trying to find the drl sensor located at the top of the instrument panel (according the user's manual) to make sure it is not blocked. Headlights don't stay on for 30 seconds anymore after exiting and locking the car with the remoteless clicker. Couple off occasions when the headlights didn't turn on automatically when it was dark.



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Go to autozone the can help you if you have one they do a lot of things fore nothing including clearing codes

Posted on Feb 21, 2009


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Sounds like there is a significant short in the circuit, often is the harness that the bulb itself plugs into. Look for frayed wires, loose wires, burn marks on the contacts of the buld and/or the harness. With no bulb in the suspected harness, does the other headlight continue to work? If not the circuit short is closer to the relay, and not at the headlights themselves.

Also if the highbeams work, and you see the DRL light flash, is indicating there is a bulb out, and not an issue with the DRL relay itself.

Dec 06, 2013 | 2008 Chevrolet Equinox LS

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Headlights not working

1. Verify that both low beam headlights are not burned out.

2. If both headlights are OK, inspect the low beam wiring and connections.

3. Check for corrosion at connector C101

4. C101 is a 15 cavity black connector located under the battery. If OK, backprobe and ground the Dark Blue low beam wire at that point, if the lights work check the Dark Blue wire for an open back to the switch. If they do not work check for an open up to the headlights.

Apr 14, 2013 | 2000 Chevrolet Cavalier

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DRL works all the time...turn lamp switch on ..don't get brighter...and highbeams don't work.

The DRL's are separate from the actual headlights. It sounds like your headlights aren't working at all. The first thing I would check would be the headlight fuse(s), or relay(s). The location for these should be in your owner's manual.

Hope this helps!

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I have a 1999 gmc 4x4 truck seiara how do you make the automatic headlight stop woeking they r on all the timd day r night i just whant to dissconect them all togeather

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Check the bulbs -- the daytime running lamps use the highbeams on the resistor -- There are two filliments per bulb one high; one low. If both high beam filliments are out nothing will work....replace bulbs if this is the case.

Aug 02, 2009 | 1999 Pontiac Sunfire

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