Step 3 · Loosen the Slip Nuts
Locate the two large slip nuts that secure the P-trap. One connects the trap to the vertical pipe (tailpiece) coming from the sink, and the other connects to the horizontal pipe (drain arm) going into the wall. Attempt to loosen them by hand first, turning counter-clockwise. If they are too tight, use a pair of channel-lock pliers to grip the nut and turn it. Loosen both nuts completely, but leave them on the pipes for now.