High Beams don't work on 94 Silverado

[Ben Spong]

I have a 94 Silverado and my high beams stopped working. I went and tested voltage and all that which was good. I am assuming it is the switch at the bottom of the column that the rod goes into. The problem is, I cannot find a "How To" video ANYWHERE... I don't really have the extra cash at the moment to take it some where. Any help would be greatly appreciated!!

 

[Schurkey]

Test the voltage AT THE HIGH BEAM HEADLIGHT SOCKETS. This could easily be two burnt-out headlight bulbs.

Test all fuses related to headlight operation. Aww, hell. Check ALL fuses.

Do the low beams work until you switch to high beams?

 

[Ben Spong]

Hey Schurkey

Thanks for responding. I tested the voltage at the high beam socket. I couldn’t find any fuses related to headlight operations. The low beams work but when I switch to high beams, the high beams flash real quickly and then turn off. I’ve spent 2 days researching online and I can’t find any definitive step process in this.

 

[Urambo Tauro]

I went and tested voltage and all that which was good.

I tested the voltage at the high beam socket.

If you have voltage at the socket, then the only thing that's left is the bulb itself, (or the ground path which I expect is fine, considering that the low beams still work).

 

[DerekTheGreat]

The switch could be bad. Mine failed in such a fashion that none of the headlights worked, it was like stuck in limbo. Replaced that and now I have working lights.

 

[Schurkey]

I tested the voltage at the high beam socket.

Doesn't do us much good to tell us you tested voltage, and then NOT tell us what the test results were.

I couldn’t find any fuses related to headlight operations.

Keep looking. There's at least one. Sometimes there's four or five--some vehicles have a fuse for each low-beam light, and each high beam light, and they're fed off of a fifth fuse that controls many other lights as well.

The service manual for this vehicle would tell you.

The low beams work but when I switch to high beams, the high beams flash real quickly and then turn off.

If BOTH high-beam lights flash, they're probably both good. I'm going to assume that you have no voltage to the high-beams except for a pulse when they flash.

Yeah, sounds like a failed high- low-beam switch.

I’ve spent 2 days researching online and I can’t find any definitive step process in this.

You should be looking in your GM service manual.

 

[RichLo]

Sounds like a good time to do a 4-high mod AND a stand alone headlight harness relay mod.

 

[Ben Spong]

I HAVE been looking in the manual... I went there first and haven't found anything. Hence why I turned to this site. Can anyone tell me where to find a video or instructions on how to change the dimmer switch? I have looked all over youtube but haven't been able to find anything. Would a Chiltons or Haynes manual tell me how to do it?