I have a 1990 Z71 Truck. The brake lights stay on . I can't find the problem.

If you have a towing package, check there, a wire may be installed incorrectly, or it may have come unhooked. There is a switch near the brake pedal that makes the brake lights work, if it is stuck, that could be the problem. This are a good place to start.

Its your brake switch put your brakes all the way to the floor reach up under your dash there is a switch it's a littlet black lever on the bottom of the brake switch pull it all the way to the front if that doesn't work all its doing is reseting your brake switch then bye a new one its only like 5 bucks so your welcome steve

its your brake switch put your brakes all the way to the floor reach up under your dash there is a switch its a littlet black lever on the bottom of the brake switch pull it all the way to the front if that doesnt work all its doin is reseting your brake switch then bye a new one its only like 5 bucks so your welcome steve
Dude, did you check that date of his original post?