Gmc Sierra Third Brake Light Not Working

If electrical current is reaching the switch but the lights are not working even if the switch is in good condition follow the current flow with your test light to the stop lamps and look for a possible open or short in the circuit.

Gmc sierra third brake light not working.

2003 gmc sierra 3500 6 0 v8 gas. Other things use that ground when the key is on so its not strong enough then to activate the armature within the relay. Hi i just bought a 2009 chevrolet silverado 1500. Feb 23 2014 3 08am.

If your third brake light works either way but the rear brake lights stop working when the truck is on its a faulty ground wire to the stop lamp relay. My interior light and cargo light bulbs work. A blue wire connects the brake lights switch to the rear lamps junction block. Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are.

If only the third brake light or the lower two lights work start by checking the circuit fuses first. Remove the screws from the bulb lens which you can access through the trunk or see your vehicle repair manual to get the exact location. The possible reasons for brake lights not working but tail lights are. I can not interpret fues box lables to check fuses.

Chevy truck forum silverado sierra gmc truck forums. I think they are supposed to. If at least one brake light works but one or two others don t troubleshooting is relatively easier than dealing with a circuit where none of the lights work. I checked the following fuses for current.

None of the lights come on when i open my doors. The two bulbs under the dash do not. Yes i need help brake lights work with doors open or closed with brake pedal on just the third brake light does not work when ignition is on and doors are closed. 3rd brake light and cargo lights not working.

Lol i haven t located a bad fuse. That s my next project. Third brake light not working. I noticed the third brake light is not working.