Replacing Whrilpool freezer door gasket

Need help to determine how to remove/replace freezer door gasket. There are no screws and it does not appear to be a push-in type. I have the gasket part number 2177310, on order and would like to figure out how to do this before it arrives. Any ideas?
J

Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=GT22DKXGW01

Click on 8B in Freezer Door Parts section it has a Q&A on installing.

Also see the attachment for a parts sheet that may help