‘02 Tahoe Tail lights work, but brake lights, including third brake light are currently down.

[Prhis1]

Fix one issue and get right into the next issue. Great. Anyways, I found out light night my tail lights are working perfect, except my brake lights won’t come on to save its life. I check my fuse box and the fuses were fine. I check the engine fuse box and the interior one. Later on today I’ll be checking my wiring harness for the tail lights to ensure everything is fine with them wires.

Any suggestions please lmk

 

[Joseph Garcia]

Keep going on your troubleshooting. Get out your volt meter, and see if you have 12 volts on one of the brake light's socket contacts, when someone else steps on the brake pedal.

 

[Fless]

If the switch on the pedal is working properly, a good testing point near the back is the junction block. You can find wiring diagrams at www.charm.li.