The `lower brake lights on my 95 blazer stopped working. The third upper hatch brake light works fine. The fuses and brake switch look fine. I don't know if there is a relay I'm missing. All other light and turn signals work fine.
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The outer brake lights work off the brake light switch mounted by the brake pedal so that will need to be replaced. The 3rd brake lamp is powered by another source with a power inverter that runs up the voltage somewhat for the lights are light emitting diodes instead
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
A very common issue with these is the multfunction/turn signal switch in the steering column.GM has a recall on this problem you should contact your local dealership have your VIN number to see if your vehicle is included in the campaign. If so the repair should be minimal cost or no charge to you at all.
The brake light switch on your truck, is wired so the brake lights and 3rd light are on seperate circuits. Check the wiring right at the connector on the switch. Pull on each wire individually and you will find one that is being held together by the plastic insulation only.
does the 4 ways work? if they do it would be the brake light switch at the brake peddle,,,,,,,,, if they dont the problem is in that red hazerd switch on your steering colum inside it has 3 spring loaded pads that make 3 electrical contacts each so 9 in all and they get sticky from dirt, dust & coffee and hot chocolite dumped on them and stick and burn out. and your brake lights stop working... I could tell you how to fix it but rather diagnose what it is first
CHECK THE LIGHT YOU CHANGEIT IF THEY SEE FINE AND THE FILAMENT IS INTACT CHEK THE CONECTCION PLUG OF THE BRAKE LIGHT AND WITH A SCREW TRY TO CLEAN THE CONECTION ARE SOMETIMES WITH THE CONSTACT USE GETS A LITTLE BIT RUSRTY BUT NOTHING IMPORTANT
ljones, Did you check the "VEH stop" fuse in the left side instrument panel fuse box. There are 3 stop light fuses, 1 for all the stop lights located in the under hood fuse box. 2 in the left side IP fuse box. 1 for the upper stop light and 1 for the lower stop lights. The fuse box in the IP is where the upper and lower stop lights split. Let me know.