Pour the apple cider vinegar and 1 ½ cups of water in the base of the Instant Pot.
Insert the rack and place ribs on top. Seal lid on top and cook on high pressure for 20 minutes. Allow the Instant Pot to vent for about 10 minutes before removing the ribs from the pot.
Meanwhile, preheat an oven to 425 degrees. Carefully, place the ribs on an aluminum foil lined sheet tray and brush both sides of the ribs with bbq sauce. Bake in the oven for 7-10 minutes until the sauce is sticky.
Slice ribs into sections and serve with additional bbq sauce.