My Brake Light has stopped working on my Silverado?

I was messing with my trailer lights and replaced a fuse and it seemed to fix my trailer issue. However right after my tail lights on my truck immediately stopped working, no brake lights or turn signals. The only thing that works is the third brake light. I’ve checked all of my fuses and can’t find any bad ones and I recently replaced my brake light switch. Does anyone have any ideas? I assume it’s a fuse I’m overlooking.

The brakes lights on my truck will not work when I press my brakes. The tail lights work on the top but the bottom tail lights does not work. The third brake light works, located at the top above the rear glass. I tried checking the fuse under the hood and on side of the door. All seem to be good, I even changed the brake terminal under the brake pedal. The brake light bulbs r good, Cant figure it out.

Where are the turn signal and flasher module located.

Ok, that fixed it thanks for your help. I like this site

Electrical problem V8 Two Wheel Drive Automatic 32500 miles

my brake lights do not work, but the cab brake light does. The flashers will work and turn indicators also. So I know its not in the fuse, and changed out both bulbs.

Just found out a few days ago. Brake lights do not work but all other signals and the cab brake light works.

Tested everything, switch is fine, receiving power to the fuse panel under the hood and in the cab fuse. Grounds look good, bulbs good. No visible wiring issues.

What would you recommend as a way to test the switch? I have spend 8 hours testing every wire in/out of the turn switch and the fuse panel to no conclusions. I tried jumping across the switch itself to no success. Tried unplugging it to no success.

The white(brake power) is good coming out of the switch going into the fuse panel and into the turn lever itself. The CM brake light tests good. The rear brake fuse jumps up and drops back down to zero on the multi meter. Testing the backside of the fuse panel blue wire tests good 12v when pressing the brake pedal which is odd. From the wiring diagram all this doesn't make sense. I am looking for a way to make sure its the switch itself before purchasing one. Any ideas would be appreciated.

Anyone figure this out yet?

Hi everyone.

Here is a new twist. I have a 2004 silverado with no brake lights or 3rd light. I have power at the underhood fuse and at the orange and when pedal depressed power in white wire. However I have no power in 15 amp dash fuse. What do you suggest?

Jim walker

Hi,

New member. Brake lights out except Center High Mount Stop Lamp. Rear Junction Block or Turn Signal Module? Thanks.

Thanks for your reply. I did check the switch earlier. Unclipped it from pedal/bracket, inspected and re-installed with no luck. I've got 12V at the fuse. Also I have brake lights through my factory trailer harness. I was pulling on the turn signal module because it's mentioned in a thread on this site, and another I saw earlier. The rear junction block is suspect for me only for the fact that I don't think it's just a dumb block, but some type of electronic assy. I don't know. FYI I'm using Alldata electrical schematics.

Will do. Thanks.

The Brake lights on the bed dont work, also the trailer connection isnt working. My third brake light works though) I replaced the bulbs in the tail light assembly. And checked the old bulbs but they work fine. I checked the fuses under the hood and in the dash. Dash-good. Underhood-bad. So I replaced the one under the hood. The one in the dash says "VEH STOP" and the one under the hood says "TRL PARK" (the new one hasnt blown) ok, Thinking I had the problem fixed ! But nope! I came on this site and found a trouble shooting guide step by step. Ok thought I had it now. I followed each step and found I had power to both fuses, the brake light switch(on the orange, and the white) I have power all the way through the check list till the last step. When I check I have no voltage coming through the light Blue wire at the tail light. I crawled under the truck and followed the harness back all the way to underneath the cab. I peeled back the plastic protective sleeve, and fanned out the wires. I stripped off a tiny piece of the jacket on that light blue wire, and checked the voltage. ( With the brake off, and with it depressed- nothing. Any help would be greatly appreciated ! I fear it is a bad wiring harness, But like I mentioned, I have parking lights, back up lights, turn signals, just no brake lights.