In day to day driving I will leave the VSC on, but when I wanted to do donuts and J-Turns with the slightest bit of slide the brakes would step in so the truck would say in a straight path.
The only problem I had was when driving through 4 foot high snow banks left by the plow truck, with the VSC on the truck had a rendency to get stuck cause your spinning the tires to go through, once I turned it off no problem.
You will see once you get the truck that VSC is a BS option and it is only their so they can get more money for the vehicle and to prevent idiots from killing themselves, in my opinion this VSC, stuff is for the moron who can't drive on dry roads let alone wet roads, you know the people who take exit ramps just as fast in the rain as you would on a dry day, had several friends total brand new cars like that.
I drove around with the VSC on taking turns slightly fast on slushy roads and nothin so I guned it around a turn and just when I broke the rear end loose and fish tailed the VSC kicked in, if you drive like you would rather walk the VSC comes in handy.
When you took off in the parking lot you probably spun the tires making the traction control kick in, that you can't shut off but VSC vehicle skid control can be shut off, thats what keeps the truck form over steering and fishtailing, keeps you from loosing control.
Traction Control is good cause it keeps the tires from spining, keeps you in contact with the ground.