I installed the new actuator but now it constantly blows hot air. on 1996 Buick Park Avenue

There was no plastic arm on my old piece but is on the new part. Is there supposed to be a rod attached to the arm on the new part? Where can I find a diagram on how this is supposed to be installed?

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1 answer
LOOK FOR A ROD ON A BROKEN ARM AROUND THE AREA THAT YOU INSTALLED ACTUATOR AND CONNECT