That usually signifies a flooded condition as fulll throttle cuts the injectors. Check the purge valve selenoid on the front of the engine, its a $20 part and easy to replace. If its clicking its shot
I have a 2014 Chevy traverse 3.6L with 208k original motor, chains, and phasers. I have always kept the oil clean and full. Car runs and drives perfect, no CEL or other running issues, idles smooth as butter, and plenty of power.
Around the 180k mileage mark I started to notice a 2 second...