Gmc Sierra Third Brake Light Not Working

Other things use that ground when the key is on so its not strong enough then to activate the armature within the relay.

Gmc sierra third brake light not working.

3rd brake light and cargo lights 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. 2003 gmc sierra 3500 6 0 v8 gas. Hi i just bought a 2009 chevrolet silverado 1500.

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 two bulbs under the dash do not. Third brake light not working. The possible reasons for brake lights not working but tail lights are.

My interior light and cargo light bulbs work. I m hoping for an oddly named fuse or relay. Lol i haven t located a bad fuse. 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.

Feb 23 2014 3 08am. Chevy truck forum silverado sierra gmc truck forums. 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. Interior fuses 12 stoplamps center high mounted stoplamp worked fine.

If only the third brake light or the lower two lights work start by checking the circuit fuses first. That s my next project. I noticed the third brake light is not working. A blue wire connects the brake lights switch to the rear lamps junction block.

I can not interpret fues box lables to check fuses. None of the lights come on when i open my doors. I checked the following fuses for current. I think they are supposed to.