I requested an extension for 2017 taxes and never filed. Now I am ready to file but don't have my w2's. Does TT have my info?

Did you enter them into Turbo Tax last year?  Did you start filing out your return?  Do you need to finish filing or do you just need the actual W2s to attach to mail your return?

How to finish a prior year online return   <a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/replies/4186197">https://ttlc.intuit.com/replies/4186197</a>

TurboTax does not have your W-2’s. You are supposed to save those for your own records. Since you have to mail your 2017 return you are also expected by the IRS to attach copies of your W-2’s to your return. Try asking your employer(s) for copies.