2004 Colorado LS, 4 cyl.

The 2 rear tail lights come on when the lights are turned on (all 4 bulbs). They do not light up when I hit the brakes. The brake light above the cabin does come on, however.

I can't find a fuse under the hood that is labeled brake lights or similar.

Any thoughts as to why only the middle light comes on when I hit the brakes, and not the 2 tail lights?

both the high mount and the lower brake lights share the same power and ground. So if the high mount is working, then the fuse isn't blown. check to see if maybe the bulbs are burnt out, and while the bulbs are out, see what is missing from the circuit, power or ground and trace them back from there

There was a recall for the stop light switch on the Colorado. I have a 2005 4x4 5cyl. The recall was for faulty stop light (brake) switches that would stay on, not come on, or only light the cab light or bed lights.

I had the recall done to my truck. My problem was that when they replaced the swich they didn't do it correctly and the brakes were constantly on just slightly. Itcaused the rotors to warp and the pads to wear out quickly.

Good luck with your truck!

I have similar problem and is looking for a solution. Please help.

I have the same problem. only the two taillights dont come on but the cab light does. i found out that the fuse failed so i replaced it and it worked but then found out the next day that it failed again. I would really appreciate any suggestions.