Hey there! That sounds really concerning. The issue where the brake pedal feels like a rock when starting could be due to a few things. One possibility is air in the brake lines. When air gets into the hydraulic system, it can make the pedal feel hard. Another thing could be a problem with the brake booster. If it's malfunctioning, it won't assist the braking effort properly, causing that rock - hard feel.As for the overly touchy brakes, it might be related to the anti - lock braking system (ABS) sensors. Sometimes, if they're dirty or malfunctioning, they can send incorrect signals to the vehicle's computer, which in turn can affect how the brakes respond.Since your Equinox is just over a year old and has under 30,000 miles, it might still be under some form of warranty. I'd highly recommend taking it to a certified Chevrolet dealership as soon as possible. They have the proper diagnostic tools to accurately figure out what's going on and can fix it under warranty if applicable. Hope this helps, and I'm crossing my fingers that they can get it sorted out quickly for you!