Where is the break sending unit on 1998 Chevrolet 1500 Pickup

I have no break lights,I have checked the bulbs,fuse,harnes,everything looks good,went to check sending unit,it is not where it is on most trucks!anyone know where to look? Thanks

1 answer
switch is on a bracket under the dash, look on the brake pedal arm for the plunger and follow it to the switch.