Thanks for the question.
**Remove the AIR BAG Fuse from the IP fuse block.
Remove the steering column trim cover.
Disconnect the steering column electrical connectors.
Disconnect the multifunction switch connectors (2) from the steering column electrical connector (1).
Remove the steering column wiring harness from the wiring harness strap.
BEFORE INSTALLING NEW SWITCH:
Important: The multifunction switch electrical contact must rest on the cancelling cam assembly.
Use a small blade screwdriver in order to compress the electrical contact.
Move the multifunction switch into position.
There is a metal tab on the front of the switch that MUST be depressed while putting the new switch on. The tab will need to slide down onto the brass contact plate in front of the switch.
The procedure listed is from GM on how to replaced the switch.
The 2 bigger plugs come loose from the main plug at the base of the column. One of the smaller ones goes up the column to the BTSI solenoid, you will have to hunt for it with a flash light, it can be hard to find. The other plug, which should be green will not be used for anything on your van if I remeber correctly.