Wheel up might sound related to pull up but it most certainly is not. Wheel up is an entirely different slang and has only one meaning in the field of rap and DJing.
“Wheel Up” is a term for rewinding. It might be used for rewinding a track or song. More commonly, however, it refers to making the DJ play again, mainly because he or she might have been a favorite or someone who is good. Examples of its usage are given below.
“You better wheel up that track because I’m gonna rip my best dance moves.”
“Wheel him up! He is so much better than what this doofus is doing!”