diff --git a/opendbc b/opendbc
index 8d2f614ce3f323..4ab347baefb747 160000
--- a/opendbc
+++ b/opendbc
@@ -1 +1 @@
-Subproject commit 8d2f614ce3f323c65de802b2d5f29143de9c427b
+Subproject commit 4ab347baefb7473771ada0723c969c50d0c28d01
diff --git a/selfdrive/car/gm/carstate.py b/selfdrive/car/gm/carstate.py
index 8585e9f205feb6..89c1a3596ac159 100644
--- a/selfdrive/car/gm/carstate.py
+++ b/selfdrive/car/gm/carstate.py
@@ -98,7 +98,7 @@ def update(self, pt_cp, cam_cp, loopback_cp):
     ret.leftBlinker = pt_cp.vl["BCMTurnSignals"]["TurnSignals"] == 1
     ret.rightBlinker = pt_cp.vl["BCMTurnSignals"]["TurnSignals"] == 2
 
-    ret.parkingBrake = pt_cp.vl["VehicleIgnitionAlt"]["ParkBrake"] == 1
+    ret.parkingBrake = pt_cp.vl["BCMGeneralPlatformStatus"]["ParkBrakeSwActive"] == 1
     ret.cruiseState.available = pt_cp.vl["ECMEngineStatus"]["CruiseMainOn"] != 0
     ret.espDisabled = pt_cp.vl["ESPStatus"]["TractionControlOn"] != 1
     ret.accFaulted = (pt_cp.vl["AcceleratorPedal2"]["CruiseState"] == AccState.FAULTED or
@@ -135,7 +135,7 @@ def get_can_parser(CP):
       ("PSCMStatus", 10),
       ("ESPStatus", 10),
       ("BCMDoorBeltStatus", 10),
-      ("VehicleIgnitionAlt", 10),
+      ("BCMGeneralPlatformStatus", 10),
       ("EBCMWheelSpdFront", 20),
       ("EBCMWheelSpdRear", 20),
       ("EBCMFrictionBrakeStatus", 20),