Any might know the Part Number for the Parking Brake Valve (interior driver side console) and the Switch on the bottom of the valve.
After chocking, went to do Leak Test, when pushed in, continually "hisses" leaking air, can feel it at the bottom of the switch, probably original valve.
Worked OK earlier in the day, but of course did not at the CDL test !
Would like to replace valve & switch.
Thanks for any input.