[MJT]

Hi Lou,

Maybe you should trade dealers and not the truck!

Did you add on a cap on the back of your truck? With me, I had the same problem and it turned out to be a short in a wire leading from my left tail light to the light on my cap. If your brake lights fail, it knocks out your cruise control as a warning.

If you have modified the wiring in the back, I would look for a short.

Hope this helps...