what would make my rear brake lights quit working? third brake light still works bulbs are good. blinkers work. could it be the brake switch are blinker switch and how to test the two

 

Check to see if the fueses are blown. There should be fuses under the hood for the left and right brake lights. If the highmount light works normally then the brake switch is fine.

Sarge

 

checked all the fuses all are good unless i'm missing somthing the ones uder the hood looked like they are all relays except for two next to the fire wall

 

I think there are 2 fuse blocks under the hood, there should be a smaller one more towards the fire wall that has the trailer fuses in it. My truck is not here so I cant look. If you have the owners manual check there, it should tell you description/ fuse locations.

The only other thing I can think of is it has the wrong bulbs, or the connectors are corroded, but oit doesnt sound like it cause the parking lamps work, and the directionals work.

Sarge

 

I found the problem. It has to do with the multi function swith in the steering colum. I pressed the hazerd switch a few times and the brake lights went back to working. I thank it has to do with the amount of dirt and dust that gets down in there.HEY THANKS FOR ALL OF THE HELP AND SUGESTIONS

 

Your welcome, I am glad you found it, I was going to drive the truck home tonight incase you needed me to check anything, but I guess you are all set.

Sarge