diff --git a/opendbc b/opendbc
index 4885685171..c6665ed11b 160000
--- a/opendbc
+++ b/opendbc
@@ -1 +1 @@
-Subproject commit 488568517162194fbb2aa45d3dba4c6af663a883
+Subproject commit c6665ed11b8d8c998e46f8dbee30e70a7d451e5e
diff --git a/selfdrive/car/gm/carstate.py b/selfdrive/car/gm/carstate.py
index e89ece198e..0bda7edad9 100644
--- a/selfdrive/car/gm/carstate.py
+++ b/selfdrive/car/gm/carstate.py
@@ -80,7 +80,7 @@ class CarState(CarStateBase):
     ret.cruiseState.enabled = pt_cp.vl["AcceleratorPedal2"]["CruiseState"] != AccState.OFF
     ret.cruiseState.standstill = pt_cp.vl["AcceleratorPedal2"]["CruiseState"] == AccState.STANDSTILL
     if self.CP.networkLocation == NetworkLocation.fwdCamera:
-      ret.cruiseState.speed = (cam_cp.vl["ASCMActiveCruiseControlStatus"]["ACCSpeedSetpoint"] / 16) * CV.KPH_TO_MS
+      ret.cruiseState.speed = cam_cp.vl["ASCMActiveCruiseControlStatus"]["ACCSpeedSetpoint"] * CV.KPH_TO_MS
 
     return ret
 
diff --git a/selfdrive/car/gm/gmcan.py b/selfdrive/car/gm/gmcan.py
index 98265e8c6b..3a10c4d9da 100644
--- a/selfdrive/car/gm/gmcan.py
+++ b/selfdrive/car/gm/gmcan.py
@@ -63,8 +63,7 @@ def create_friction_brake_command(packer, bus, apply_brake, idx, near_stop, at_f
   return packer.make_can_msg("EBCMFrictionBrakeCmd", bus, values)
 
 def create_acc_dashboard_command(packer, bus, acc_engaged, target_speed_kph, lead_car_in_sight, fcw):
-  # Not a bit shift, dash can round up based on low 4 bits.
-  target_speed = int(target_speed_kph * 16) & 0xfff
+  target_speed = min(target_speed_kph, 255)
 
   values = {
     "ACCAlwaysOne" : 1,
diff --git a/selfdrive/test/process_replay/ref_commit b/selfdrive/test/process_replay/ref_commit
index 67838d2921..8aa80d6b79 100644
--- a/selfdrive/test/process_replay/ref_commit
+++ b/selfdrive/test/process_replay/ref_commit
@@ -1 +1 @@
-60aa8580527e513fe25100a348ee4c5971717960
\ No newline at end of file
+118d78e2040103c00b4bfcc875fcdcd6a15e2211