Product review (5 stars): Fixed my KitchenAid superba
I fixed my KitchenAid Superba side-by-side with this.

Since we moved in, the fridge has not been working correctly. At first, the freezer was so cold it would freeze a tub of ice cream into stone, and also freeze milk, apples, etc in the fridge side. Then, a couple weeks later, the fridge would be super warm (~42F) and the freezer would still be freezing things solid. Turns out, the louvers in this module weren't opening and closing. When I took the module out, there was something rattling inside and the louvers would just fall open or closed with gravity. Thus, the problem was that the temperature control wasn't able to open or close the passage between the freezer and the fridge, which mean it couldn't regulate the temperature in either.

In case it's not clear, the fridge is cooled by letting some air in from the freezer side until the fridge is cool enough, and then closing it off. Assuming the freezer always needs to be colder, this generally works fine.

Replacing this module was pretty easy. As others here said, the clips were a tight fit on my model as they were slightly shorter than the original module. I just trimmed the foam a little which gave the additional clearance needed to fit it into place.