My brake shift interlock is not functioning. The brake lights work and I tried replacing the brake light switch that is actuated by the brake pedal. The only way I can shift out of park is to insert a popcicle stick into the manual interlock access hole. Is there an electronic interlock relay or fuse that needs replaced, or is it the interlock switch on the floor shifter? I checked all of the fuses in the passenger compartment fuse panel (all looked good).