On my Bolt, pressing the paddle disengaged cruise control, just as stepping on the brake would. On my new 22 Niro EV the paddle is disabled when cc is on. Seems like a curious decision...I wonder why they chose to do that. It surprised me the first time I pressed in that state and the car did not slow down
Good question. Not having owned a Bolt or any other car with regen paddles, I never knew that was an option so I haven't missed it... until now! I often use the "Cancel" button on the steering wheel when I want to stop cruise control in the most smooth way possible. For me the car can jerk a little when canceling CC with the brake pedal, unless I am very deliberately light with the pedal.
I wish that the cruise would use the level of regen you have set instead of setting the pedal to level 0. It's hard sometimes to have a smooth transition from cruise to getting the accelerator pedal to the proper level when cancelling. jerk jerk!
Have you tried using the auto Regen setting? Hold the right paddle to set it to Auto. Then it will manage itself based on cars ahead of you
when cruise comes off, car reverts back to regeneration, so if you are in Eco, you revert back to level 2