If you're using TurboTax Online, search for W-2 in
the search box located in the top right. Then, click the Jump to W-2
link in the search results to open the Here's your W-2 info
screen. You can also use the navigation bar to go to Federal Taxes >
Income. From here you should be able to see either all the W2s listed or go to
the W2 topic.
Click Delete next to the W-2 you want to
remove.
Click Edit next to the W-2 you want to change.