window motor repair on 1999 Pontiac Firebird

I am currently repairing the window motor but can't seem to figure out how to get the new motor in and the old one out. Any assistance with this would be greatly appreciated.

Asked by for the 1999 Pontiac Firebird
I used this step-by-step tutorial to change my own motor. Took me less than an hour, and it was worth the effort--local mechanics wanted to shaft me for $100 for the job. Here's the site:
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You might find a free manual here: or go to or and get an online repair manual subscription.