My cruise control will not stay on after i turn it on. The light will stay lit for about 5 seconds but will then turn off, the only way to get it back on is to turn the truck off and then back on. If I hold the brake down the cruise will stay on but once i let off it turns off. I replaced the brake switch but that did not solve the issue. Any help would be great!

 

Sounds like you may have a bad LF hub assembly.