Isn't that a separate question from the pre-check question?

Regardless, when you get wheelchair service, after Checking in, the pusher will take you through security to your gate. They skip the line with wheelchair pax. Since I do not walk or stand, I get the pat down, swab my shoes treatment. My carry on bag goes through the X-ray machine while they are doing that. Afterwards they push me to my gate. At the gate I sit in the wheelchair until boarding. At that point, some guys come to help me transfer to an aisle chair and board me. The wheelchair is left there to be collected by whoever does that. In my case, I use my own wheelchair, so at the gate I get a gate-check tag on it. It is then either loaded in the space onboard or carried down to be put with baggage. On arrival the assistance people come with an aisle chair. When we come through the aircraft door, my wheelchair is usually waiting for me right there. I get pushed to baggage claim and from there whoever I'm meeting takes over getting me to the car. Does this answer the question?

By the way, all that is without signing up for pre-check.