        ret.steerRatio = 14.4
        ret.centerToFront = ret.wheelbase * 0.4
        CarInterfaceBase.configure_torque_tune(candidate, ret.lateralTuning)
  
      # TODO: start from empirically derived lateral slip stiffness for the civic and scale by
      # mass and CG position, so all cars will have approximately similar dyn behaviors
      ret.tireStiffnessFront, ret.tireStiffnessRear = scale_tire_stiffness(ret.mass, ret.wheelbase, ret.centerToFront,
                                                                           tire_stiffness_factor=tire_stiffness_factor)
 
</s> remove CAMERA_ACC_CAR = {CAR.BOLT_EUV, CAR.SILVERADO, CAR.EQUINOX}
 </s> add CAMERA_ACC_CAR = {CAR.BOLT_EUV, CAR.SILVERADO, CAR.EQUINOX, CAR.TRAILBLAZER}
    elif candidate == CAR.TRAILBLAZER:
      ret.mass = 1345. + STD_CARGO_KG
      ret.wheelbase = 2.64
      ret.steerRatio = 16.8
      ret.centerToFront = ret.wheelbase * 0.4
      tire_stiffness_factor = 1.0
      ret.steerActuatorDelay = 0.2
      CarInterfaceBase.configure_torque_tune(candidate, ret.lateralTuning)

        ret.steerRatio = 14.4
        ret.centerToFront = ret.wheelbase * 0.4
        CarInterfaceBase.configure_torque_tune(candidate, ret.lateralTuning)
  
    elif candidate == CAR.TRAILBLAZER:
      ret.mass = 1345. + STD_CARGO_KG
      ret.wheelbase = 2.64
      ret.steerRatio = 16.8
      ret.centerToFront = ret.wheelbase * 0.4
      tire_stiffness_factor = 1.0
      ret.steerActuatorDelay = 0.2
      CarInterfaceBase.configure_torque_tune(candidate, ret.lateralTuning)

      # TODO: start from empirically derived lateral slip stiffness for the civic and scale by
      # mass and CG position, so all cars will have approximately similar dyn behaviors
      ret.tireStiffnessFront, ret.tireStiffnessRear = scale_tire_stiffness(ret.mass, ret.wheelbase, ret.centerToFront,
                                                                           tire_stiffness_factor=tire_stiffness_factor)
keep keep keep add keep keep keep keep
 GM: Trailblazer 2021-22 support  (#27830)

* Add trailblazer support

* Update routes.py

* Update routes.py

* Update CARS.md

* Fix incorrect torque name

* Update values.py and CARS.md

* Change to update another route

* update docs

* only 2021 https://en.wikipedia.org/wiki/Chevrolet_Trailblazer_(crossover)

only 2021

* new FP with missing addrs

* Update selfdrive/car/gm/interface.py

* tune the torque params

* update docs

* remove as a new platform

* Revert "remove as a new platform"

This reverts commit c9c65f29dbb1e1a5926540bb75433928325d6c0e.

* add comment and comment out FP

* need it to be in all_known_cars to test_model

* add to releases

---------

Co-authored-by: Shane Smiskol <shane@smiskol.com> 
selfdrive/car/gm/interface.py