Brake lights

[Eric Garcia]

I recently installed New Style LED taillights on my 2003 silverado, all the lights are on but when i step on the brake, only the 3rd brake light comes on 

[Jsdirt]

Check the fuses - the CHMSL & both brake lamps run on separate fuses If I remember right. Could have a blown fuse. If anyone got in the truck and hit the brake while the wires were dangling, I'd bet on it.

 

If that checks out, you'll need to make sure it's wired correctly.

 

Another possibility is that they're chinese LED units - seen many of these dead on arrival ...