tahoe headlight problem

[sharecropper]

I have a problem with the headlights on my 98 tahoe. I have not found any other info anywhere else, so hope someone here can help! when I switch the lights to bright,they will sometimes momentarly go bright and then go to daylight running lights only! pulling on the lever does nothing at this time. After about a minute or so I hear a click and they come back on by themselves! Also sometimes just driving with the dims on ,they will do the same thing, repeatedly! I have also, on one occasion , just sitting in the driveway with the brights on, had them go out compleately!!!! just the parking lights remained on.... help please!!

[cd4th]

Try the '88-'98 truck forum at chevytalk.com and see if someone there can help. I think I've heard of this problem happening before.

[96chevyman]

Had a peculiar instance with my headlights on my '96 Silverado somewhat similiar to your problem. I had no headlights, but had parking lights all around, turn signals, brake lights, etc with the switch all the way on. Had the same thing when it was set to parking lights only. Tried the dimmer switch to toggle between highs and lows, but didn't get anything. Checked all fuses and ended up taking it to the dealership after I tried a new headlight switch and that didn't fix it. Turned out to be the "combination switch" which is just a fancy Chevy term for turn signal switch. They call it the combination switch because it controls the turn signals, high and low beams, windshield wipers, and cruise control. The part from Oreilly's cost about $180 vs. the dealership who wants $300 for the part alone before labor. I let the dealership replace it because they have to remove the steering wheel and disable the airbag to change it out.

So, if all else fails, you might want to check out the combination switch. Try seeing if you can even get the high beams to come on when the switch is on. That might help you narrow it down.

Hope this helps. This one had me baffled.