diff --git a/panda b/panda
index 82151aaffe..7d27eb10fb 160000
--- a/panda
+++ b/panda
@@ -1 +1 @@
-Subproject commit 82151aaffefbb460887d09f4f5e29092d3b669ba
+Subproject commit 7d27eb10fb32095e73f60c59a123cae08cc53719
diff --git a/selfdrive/car/gm/values.py b/selfdrive/car/gm/values.py
index e633ec5f62..7628d8420b 100644
--- a/selfdrive/car/gm/values.py
+++ b/selfdrive/car/gm/values.py
@@ -11,10 +11,10 @@ Ecu = car.CarParams.Ecu
 
 class CarControllerParams:
   STEER_MAX = 300  # GM limit is 3Nm. Used by carcontroller to generate LKA output
-  STEER_STEP = 2  # Active control frames per command (50hz)
+  STEER_STEP = 3  # Active control frames per command (~33hz)
   INACTIVE_STEER_STEP = 10  # Inactive control frames per command (10hz)
-  STEER_DELTA_UP = 7  # Delta rates require review due to observed EPS weakness
-  STEER_DELTA_DOWN = 17
+  STEER_DELTA_UP = 10  # Delta rates require review due to observed EPS weakness
+  STEER_DELTA_DOWN = 25
   STEER_DRIVER_ALLOWANCE = 50
   STEER_DRIVER_MULTIPLIER = 4
   STEER_DRIVER_FACTOR = 100
diff --git a/selfdrive/test/process_replay/ref_commit b/selfdrive/test/process_replay/ref_commit
index f98caa80a7..170beafe88 100644
--- a/selfdrive/test/process_replay/ref_commit
+++ b/selfdrive/test/process_replay/ref_commit
@@ -1 +1 @@
-d862b2c7d383d859db30d6c1cc665c29c7a2a9f3
\ No newline at end of file
+a6b17ab903022b42677abe2968f3c6e50c331980