Received a ltr 89c from irs asking to complete form 8962 and form 1040x. How do i do this on turbotax?

[DoninGA]

The IRS is asking you to provide an amended tax return Form 1040X and Form 8962, Premium Tax Credit.

A Form 8962 is filed with the federal tax return if you had health insurance coverage through the Health Insurance Marketplace and received a Form 1095-A for that insurance.  Form 8962 is automatically generated by the TurboTax program when you enter the Form 1095-A in the Health Insurance section of the program.

See this TurboTax support FAQ for amending a tax return originally completed using TurboTax and click on the tax year needed based on the IRS notice - https://ttlc.intuit.com/questions/1894381-how-to-amend-change-or-correct-a-return-you-already-filed