Have a check made out to my dads estate (he died 6 years ago). Can't get check from Sears cashed st my bank. How can I cash the check.

You can re-open the estate, then open a bank account in the name of the estate, deposit the check and distribute the funds according to your father's Will or, if he did not have one, the state laws of inheritance. Depending on the size of the check, you may prefer to let the funds go to unclaimed property and claim them from the State Comptroller.