I was going to call a repairman but after seeing the picture of the end cap and reading the repair descriptions I decided I could do it myself. It was relatively easy after figuring out how the temperature control mechanism fit into the end cap and connected to the rear of the fridge. You have to be careful with the mechanism so you don't break it. Also not that there are two screws that attach it to the rear of the fridge and that the slider has to be pushed to the right to access the screws.
The end cap was an exact fit and just like the original. I received the part in 2 days. The price was very reasonable.