Hey guys i got a 2003 chevy silverado basically stock and i had my brake lights go out but still have 3rd light ( yes i checked bulbs) replaced wiring box under bed where all the lights hook up still no brake lights i have hazzards turn signals even lights just no brake lights checked fuses and they were ok except for the fact that they were rainbow colored but not blown.... any help would be appreciated thanks

 

Turn signal switch

 

My turn signal switch is acting up but, how would that affect my brake lights??

 

It all goes through it, cruise, brake lights.

 

Also , try to get a Haynes or Chilton book with wiring diagram .

God bless
Wyr