Breake Light on Cab

Searched for any brake light problems like mine,no luck, the tail lights work fine but the one on the cab does not, the bulbs are fine and the cargo lights on either side work.
Any suggestions?

Trey

turn on the hazards and tap on the top of the steering column a few times and see if it works. if it does you have a bad multifunction switch. another place to check is under the drivers door side carpet trim plate it's very common for wires to corode and break there. good luck. oh yeah look for broken wires going to that multifunction switch theres been a lot of problems with those