2020 GMC Sierra 1500 forward collision avoidance problems

Within 3 months (<4000 miles) from purchase vehicle began sputtering with hesitation, and ticking noise from engine while in motion followed by multiple alerts posting on driver display. Vehicle displays loss of power, and struggles to keep up with traffic. Check engine light flashing followed by constantly staying on, service ESC system activated, service parking brake, and steering assist reduced drive with caution lights all activated during this episode.

2020 GMC sierra slt VIN:[xxx] 15,700 miles. Braking system failure at about 45MPH on highway 78 in loganville, ga approaching an intersection with red light, vehicle seemed to loose all power braking. I stood with all I could on the pedal, and turned to avoid rear ending stopped vehicles, running into middle of the intersection before it stopped; no accident ! Dealer is replacing master cylinder and booster braking system, along with computer system upgrade.