Is your Single Member LLC set up as a S corp? If not then it is a disregarded entity and you file it on Schedule C in your personal 1040 tax return. So you will need to amend your return to add it.
If you are a S corp you need to buy the Windows Desktop Business program. You can buy the stand alone do it yourself Business Download program for Windows here (it is not available to do online or for Mac).
https://turbotax.intuit.com/small-business-taxes/cd-download
There is also a Business service, LIVE Assisted or LIVE Full Service Business which is separate from the Desktop installed Business program. It is not for 1041 Trust/Estate returns. You can see them here,
https://turbotax.intuit.com/small-business-taxes
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