Originally Posted by 67ss350camaro
I looked at a 2012 Sonic for my daughter. It also has the hill assist. As it was explained to me (did not test it myself), the hill assist only holds until the accelerator is pressed and then it releases the brake. According to a Sonic brochure, if you turn off StabiliTrak it will disable the hill assist also.
Interesting....in the Camaro pressing on the accelerator does not release the hill assist.