Hello,
It looks like you must remove the heater plenum to remove it. I would look to see if you can cut something and then repair it to make the job easier. Here is a guide and some diagrams (Below) so you can get the job done.
This will show you how to test it.
https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only
you will need to vacuum the ac down and recharge it.
https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
Here are the diagrams (below).
Please let us know what happens so it will help others.
Cheers, Ken
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Thursday, August 17th, 2017 AT 4:08 PM