To bring a vehicle to a stop. He pulled up in front of the house and waited for her to come out.
To lift or raise something upwards. She pulled up the blinds to let in more sunlight.
To improve or increase one's performance or standards. He needs to pull up his grades if he wants to get into a good college.
To confront or challenge someone about their behavior or actions. She pulled him up on his rude comments during the meeting.