Removing kitchen sink drain pipe from behind a wall

Question

I'm replacing an old galvanized pipe from my kitchen drain to the basement. The drain pipe corroded a couple feet down the line and is leaking. I'd like to replace the entire run from the sink to the sewer with PVC.

The sink drain runs into a wall behind the cabinets and then straight down into the basement.

I don't know how to remove the section in the wall without cutting into the back of my fancy-ish new-ish cabinets and taking out drywall.

It looks like there's a nut right on the wall. If I remove that nut should I just be able to pull the pipe down into the basement?

Answer 1

As you suspect, if the drain is plumbed correctly, there is a vent pipe extending above the drain connection inside the wall. The connector is probably a wye, and there is no way to free the pipe without opening the wall.