Ignition switch

From the 1988 to 93 Pontiac Lemans (USA). AIRTEX / WELLS Part # 1S6210 {#4971498, 7848744, LS589} on rockauto.com. BWD Ignition Starter Switch Part No. CS302 at Advance Auto Parts. This is the eletrical part. Key cylinder should be from the same model but not confirmed.

The electrical part is held in by a set screw on the steering wheel side and a pin on the front side. You can remove without taking the steering wheel off by bending the end of a small screw driver to a right angle and using this to remove set screw. The pin will come out if you press it in with a small screw drive and pull hard. You might break part removing so don't do this unless you plan on replacing.

For key cylinder removal, see LEC write up.