Fixing Turn Signal Switch - G20 - 1995

The turn signal on my 1995 G20 does not click off after a left turn. It works fine on a right turn. The steering wheel is equipped with an air bag. How do I get to the innards of the turn signal switching mechanism to try to repair the problem?

Best to get a good repair manual on it.

Disarm the air bag.
Remove steering wheel and lock plate.
You will need a stering wheel puller and lock plate remover.

A lot of GM vehicles require puller legs. The link is a picture of them. Napa sells them KD OTC and other companies sell them.
http://www.autopart.com/tools/toolsmain/tool/T_1520.htm 1504 shows a picture of a lockplate tool.