Gmc Sierra 3rd Brake Light Not Working

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.

Gmc sierra 3rd brake light not working.

Third brake light not working. 3rd brake light and cargo lights not working. None of the lights come on when i open my doors. 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. That s my next project. The two bulbs under the dash do not. Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are.

Chevy truck forum silverado sierra gmc truck forums. Other things use that ground when the key is on so its not strong enough then to activate the armature within the relay. Interior fuses 12 stoplamps center high mounted stoplamp worked fine. A blue wire connects the brake lights switch to the rear lamps junction block.

Feb 23 2014 3 08am. I m hoping for an oddly named fuse or relay. I think they are supposed to. 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.

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. I m not sure if it s the switches in the door jamb a fuse or what. I checked the following fuses for current. 2003 gmc sierra 3500 6 0 v8 gas.

Lol i haven t located a bad fuse. I can not interpret fues box lables to check fuses.