diff --git a/selfdrive/car/gm/gmcan.py b/selfdrive/car/gm/gmcan.py
index 238a04d5c..31ebc2cc2 100644
--- a/selfdrive/car/gm/gmcan.py
+++ b/selfdrive/car/gm/gmcan.py
@@ -127,6 +127,7 @@ def create_gas_regen_command(packer, bus, throttle, idx, enabled, at_full_stop):
     "GasRegenFullStopActive": at_full_stop,
     "GasRegenAlwaysOne": 1,
     "GasRegenAlwaysOne2": 1,
+    "GasRegenAlwaysOne3": 1,
   }
 
   dat = packer.make_can_msg("ASCMGasRegenCmd", bus, values)[2]