Did the IRS not get your 2016 return? Do you still need to file it?
You can't do a prior year return online or efile it, but you can buy either the cd or download the desktop versions for the last 3 years from Turbo Tax here....
http://turbotax.intuit.com/personal-taxes/past-years-products.jsp
Or you can check for Turbo Tax for all years on Ebay or Amazon, etc.
Either way you will have to mail in your return. And if you are doing more than 1 year, send each year in a separate envelope. Sometimes the IRS will just staple all the sheets together and miss a second return.
You can fill out the blank forms for free.
Here are some blank forms & instructions for 2016
1040 https://www.irs.gov/pub/irs-prior/f1040--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040gi--2016.pdf
1040A https://www.irs.gov/pub/irs-prior/f1040a--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040a--2016.pdf
1040EZ https://www.irs.gov/pub/irs-prior/f1040ez--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040ez--2016.pdf
2016 Tax Tables https://www.irs.gov/pub/irs-prior/i1040tt--2016.pdf
Publication 17 Tax Guide for 2016 https://www.irs.gov/pub/irs-prior/p17--2016.pdf
