When I pulled out the center console and with one hand I would touch the vacuum selector Lightly with my finger While vent was selected it would cause air to come out different areas. For instance vent was selected but touching the vacuum selector made air come out of heater doors. I’m also puzzled by the shop manual has different stamping on the selector than my car. I’m the original owner. I was in Houston Tx so I had to put the console back in to drive it home. I agree with you that I should follow the stamping on the valve, not the shop manual. AC and defrost work perfectly. Thanks for your input and help.