Lights not working

ADRIAN MICHELLE STOE

MEMBER
2001 CHEVROLET S-10
4.3L
2WD
AUTOMATIC
260,300 MILES

My brake lights don't work even though my running lights do, my blinkers on the front and back have stopped as well as on the dash. I've replaced all my fuses but no luck. Also my headlights only work on bright (I've replaced the bulbs) an my reverse lights only come on in neutral. Someone please help me I'd possible.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

Are all the brake lights including the high mount not working? If not, then the likely cause is the stop lamp switch.

Here is a guide that talks about this:

https://www.2carpros.com/articles/how-a-brake-light-switch-works

Basically we need to test this circuit with a test light to find out if you have voltage feeding the white wires coming out of the switch.

Here is a guide on how to use a test light;

https://youtu.be/Hlna_kUt7As

Please find the wiring diagram below on how this works. However, basically when you press the brakes the switch closes and sends voltage through the turn signal switch to the two lower brake lights. It then sends voltage through the under hood fuse block where it energizes the high mount relay and turns the high mount light on.

Please run through this info and let us know if you have questions on this.

Thanks

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