I have a 1994 GMC half ton extended cab and my third brake light is working but the rear two do not. I have changed the turn signal switch and the brake light switch. I have rear parking lights as well as turn signals, and my hazards work. When you turned the flashers on before and pushed the brake pedal they would stop flashing they do not now and only brake light that is working is the third breaklight. I am at a loss noone seems to know what the problem could be... HELP
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Sep 23, 2009 - 97 GMC Jimmy 4x4 blinkers work, reverse lights work, above window ... I just lost hazard lights and rear brake lights, they were working 2 days ... If it is a frayed wire or solder point, then you can repair it, but not any worn contacts. ... Does anyone have any suggestions on 1997 Honda Accord tail & brake lig.
if the third brake light is working and the left and right brake lights are not than the most likely problem is the turn signal multifunction switch.
If the third brake light is also not working and the bulb is good than check the brake light switch located above the brake pedal under the dash. There should be power on one wire all the time. There should be another wire that powers up with the brake pedal depressed. If no wires power up with the pedal depressed than the switch is bad.
I can get you specific wire information if you need it. Just let me know.
I've worked on these the first drove me crazy. its the turn signal switch every thing runs thru these. head lights, turn signal, brakes. except the third brake light. it runs directly from the brake switch. go figuare
The third brake light switch works off a module for it is a sealed unit with a inverter that takes 12 volts beefing the voltage to 110 volts for the light emitting diode lights in it. It these terms you will need a new brake light switch located by the brake pedal
I had a similar problem with my 1994 S-10 LS extended cab. Both tail brake lights worked fine. I removed the 3rd brake light cover and tested for voltage at the steel center of the two rivets and found the positive (driver side) negative (passenger side) were good. I checked the two metal strips that send power to bulbs and found the positive side was open. Seems the flared side of the rivet was not making contact with the metal strip. I bucked the rivet with a punch and hammer and it took care of the problem.