  class CAR:
    HOLDEN_ASTRA = "HOLDEN ASTRA RS-V BK 2017"
    VOLT = "CHEVROLET VOLT PREMIER 2017"
    CADILLAC_ATS = "CADILLAC ATS Premium Performance 2018"
    CADILLAC_CT6 = "CADILLAC CT6 SUPERCRUISE 2018"
    MALIBU = "CHEVROLET MALIBU PREMIER 2017"
    ACADIA = "GMC ACADIA DENALI 2018"
    BUICK_REGAL = "BUICK REGAL ESSENCE 2018"
  
  SUPERCRUISE_CARS = [CAR.CADILLAC_CT6]
 
</s> remove SUPERCRUISE_CARS = [CAR.CADILLAC_CT6]

 </s> add  </s> remove def process_hud_alert(hud_alert):
  # initialize to no alert
  steer = 0
  if hud_alert == VisualAlert.steerRequired:
    steer = 1
  return steer

 </s> add  </s> remove   def __init__(self, car_fingerprint):
    if car_fingerprint in SUPERCRUISE_CARS:
      self.STEER_MAX = 150
      self.STEER_STEP = 1              # how often we update the steer cmd
      self.STEER_DELTA_UP = 2          # 0.75s time to peak torque
      self.STEER_DELTA_DOWN = 5        # 0.3s from peak torque to zero
      self.MIN_STEER_SPEED = -1.       # can steer down to zero
    else:
      self.STEER_MAX = 300
      self.STEER_STEP = 2              # how often we update the steer cmd
      self.STEER_DELTA_UP = 7          # ~0.75s time to peak torque (255/50hz/0.75s)
      self.STEER_DELTA_DOWN = 17       # ~0.3s from peak torque to zero
      self.MIN_STEER_SPEED = 3.

 </s> add   def __init__(self):
    self.STEER_MAX = 300
    self.STEER_STEP = 2              # how often we update the steer cmd
    self.STEER_DELTA_UP = 7          # ~0.75s time to peak torque (255/50hz/0.75s)
    self.STEER_DELTA_DOWN = 17       # ~0.3s from peak torque to zero
    self.MIN_STEER_SPEED = 3. </s> remove     self.car_fingerprint = CP.carFingerprint
 </s> add  </s> remove     self.params = CarControllerParams(CP.carFingerprint)
 </s> add     self.params = CarControllerParams()
  class CAR:
    HOLDEN_ASTRA = "HOLDEN ASTRA RS-V BK 2017"
    VOLT = "CHEVROLET VOLT PREMIER 2017"
    CADILLAC_ATS = "CADILLAC ATS Premium Performance 2018"

    MALIBU = "CHEVROLET MALIBU PREMIER 2017"
    ACADIA = "GMC ACADIA DENALI 2018"
    BUICK_REGAL = "BUICK REGAL ESSENCE 2018"
  
  SUPERCRUISE_CARS = [CAR.CADILLAC_CT6]
keep keep keep keep replace keep keep keep keep keep
 Remove Cadillac CT6 port (#1359)

* remove CT6 port

* dont need this route

* extra char

* fix carcontroller params 
selfdrive/car/gm/values.py