Report "I have a 2011 Chevrolet equinox with almost 135,000 miles. What could it be if when you start the car and you take off and accelerate and when you get into the first gear shift, it hesitates like it wants to stall, but if you press the pedal a little harder it continues and is fine as you pick up in higher speeds. In that first shift it even sometimes stall, but it does start right back up every time. Could it be that the spark plugs need to be changed as I have not did the 100,000 mile service on this vehicle?"