        ("LKADriverAppldTrq", "PSCMStatus"),
        ("LKATorqueDelivered", "PSCMStatus"),
        ("LKATorqueDeliveredStatus", "PSCMStatus"),
        ("TractionControlOn", "ESPStatus"),
        ("EPBClosed", "EPBStatus"),
        ("CruiseMainOn", "ECMEngineStatus"),
      ]
  
      checks = [
        ("BCMTurnSignals", 1),
 
</s> remove     ret.parkingBrake = pt_cp.vl["EPBStatus"]["EPBClosed"] == 1
 </s> add     ret.parkingBrake = pt_cp.vl["VehicleIgnitionAlt"]["ParkBrake"] == 1 </s> remove       ("EPBStatus", 20),
 </s> add       ("VehicleIgnitionAlt", 10),
      ("ParkBrake", "VehicleIgnitionAlt"),
        ("LKADriverAppldTrq", "PSCMStatus"),
        ("LKATorqueDelivered", "PSCMStatus"),
        ("LKATorqueDeliveredStatus", "PSCMStatus"),
        ("TractionControlOn", "ESPStatus"),
      ("ParkBrake", "VehicleIgnitionAlt"),
        ("CruiseMainOn", "ECMEngineStatus"),
      ]
  
      checks = [
        ("BCMTurnSignals", 1),
keep keep keep keep replace keep keep keep keep keep
 GM: add support for vehicles with manual parking brakes (#24766)

Switch to general park brake signal 
selfdrive/car/gm/carstate.py