[lexmarks567]

I just replaced the blower in my 91 olds cutlass ciera. now the vent is stuck on defrost. i can move the vent selector from vent to bi-level to anything and the air still blows out of the window vents. any ideas. the only thing i removed was the whole air-cleaner assembly so i would have better access installing the blower.

[leroys1000]

Make sure all the vacuum lines are reconnected as many
of those systems are vacuum activated.
Start the car to provide vacuum and see if it switches.

[lexmarks567]

that was it. i was testing it when just the key turned too on. didn't think it would matter. it works.