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

Asked by for the 1998 Chevrolet 1500 Pickup
switch is on a bracket under the dash, look on the brake pedal arm for the plunger and follow it to the switch.