Installing new blend door actuator...Any special things to know?

[98dieselburb]

I am hoping to install a new blend door actuator on my 95 Tahoe. I have air coming from all locations, even though its all at the same time. Seems like there is no movement on that actuator, so I am planning to replace it.

When the motor is off, is there any way that the doors need to be set for them to work correctly? I am not entirely sure it was ever right since I bought the Tahoe.

Just wondered if anyone who has done this had any pointers...

Thanks,

Shawn

 

[MNZ71]

The door and the motor are keyed so it can only go on one way. You really cant mess it up.