I've never before seen a "Brake Feel" adjustment for brake responsiveness. What does it change? Does it adjust how hard you have to push the brake pedal before braking begins or how far down you have to push it before braking begins (the leaky master cylinder setting)?
My guess is that it has something to do with how strong the regenerative braking. Drive Mode Customization The vehicle is equipped to modify the following settings based on vehicle content. Through the infotainment home screen, select Settings > Vehicle > Drive Mode Customization to personalize My mode. These settings retain over each on/off cycle, and do not have to be reset each time the vehicle is started. Acceleration Feel : Choose how responsive you want acceleration to feel. You can adjust the accelerator pedal to provide increased power. Brake Feel : Brake response settings adjust the brake pedal response. Brake pedal feel is less sensitive at lower settings and more sensitive at higher settings
I'm unclear how the strength of regen braking, which happens w/o the brake pedal would relate to the sensitivity of the brake pedal. The only two feelings I associate with the brake pedal are how hard you have to press it and how far you have to press it. I could be wrong, but I doubt the setting adjusts either of those two feelings. So you're probably correct that the setting adjusts the level of regen braking and Chevy's technical writers never got a chance to actually drive the Blazer.