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no headlights, but have running lights on 98 Yukon


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rainsgang23
New User

Oct 26, 2008, 2:39 PM

Post #1 of 3 (3146 views)
no headlights, but have running lights on 98 Yukon Sign In

hey guys please help me. I have a 98 GMC Yukon 4WD. My problem is my headlights have quit working. My model has the daytime running lights and they still work. If I turn on my headlights the running lights will then go off but all others will work(parking, tail, brakes, etc.) My husband has checked fuse boxes under hood and inside of truck and all is good. He thought maybe the headlight switch had gone out but did the same thing after installing new one. We removed one headlight and direct wired to a battery and all bulbs work. Any suggestions you can give us to check would be greatly appreciated. Thanks.


DanD
Veteran / Moderator
DanD profile image

Oct 28, 2008, 4:12 AM

Post #2 of 3 (3121 views)
Re: no headlights, but have running lights on 98 Yukon Sign In

If there is no power getting to the headlights themselves on high or low beam; I would check the headlight dimmer switch.
I believe it is part of the multi-function switch in the steering column.
There are three wires that you need to deal with that are for the headlight circuit.
A yellow wire that comes from the headlight switch; it should have power on it anytime the headlight switch is turned on.
A tan wire, that should have power on it, when the dimmer switch is clicked for low beam headlights.
A Lt green wire that should have power when the dimmer switch is clicked for high beam headlights.
Does the high beam indicator light come on in the dash, when the dimmer switch is clicked for high beams?
Check all of the above and get back to us, with your findings?
You can do these tests with a test light connected to a known good ground and the probe on the wire connection you want to test.

Dan.

Canadian "EH"






rainsgang23
New User

Oct 28, 2008, 7:53 AM

Post #3 of 3 (3123 views)
Re: no headlights, but have running lights on 98 Yukon Sign In

Thank you so much for the reply. I am at work now, but as soon as I get home this evening I will show this to my husband and we will check it. I will let you know what we find out. And thank you again for the reply.Smile
And no the high beam indicator light does not come on at all in the dash. But the running light indicator comes on when started and goes off if I turn the headlight switch on.


(This post was edited by rainsgang23 on Oct 28, 2008, 8:15 AM)






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