Gmc Sierra Third Brake Light Not Working

The two bulbs under the dash do not.

Gmc sierra third brake light not working. Hi i just bought a 2009 chevrolet silverado 1500. If only the third brake light or the lower two lights work start by checking the circuit fuses first. I can not interpret fues box lables to check fuses. 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.

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. Other things use that ground when the key is on so its not strong enough then to activate the armature within the relay. The possible reasons for brake lights not working but tail lights are. 2003 gmc sierra 3500 6 0 v8 gas.

I noticed the third brake light is 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. Chevy truck forum silverado sierra gmc truck forums. None of the lights come on when i open my doors.

I think they are supposed to. That s my next project. A blue wire connects the brake lights switch to the rear lamps junction block. I checked the following fuses for current.

I m not sure if it s the switches in the door jamb a fuse or what. Interior fuses 12 stoplamps center high mounted stoplamp worked fine. 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. Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are.

Feb 23 2014 3 08am. Third brake light not working. My interior light and cargo light bulbs work. I m hoping for an oddly named fuse or relay.