May repossess, if it doesnt breach the peace.
May file replevin action for judicial reposession.
Once gain possession: give notice to debtor, other creditors - sell collateral at public or private sale. Must be commercial reasonable. Apply proceeds to costs and debts, then surplus to other secured parties, then debtor.
May choose to retain repossessed collateral in full satisfaction of debt if debtor does not object within 21 days