How to fill out the Payoff Request Letter Templates? Make the payment payable to Santander Consumer USA and send it to the address listed on the pay stub attached to the bottom of your monthly statement.Fill out some information about you and your car and you can get pre-approved in 2 minutes with no impact to your credit score. You can utilize our useful online tools and rely on our dedicated customer service team to help you manage your account. View a list of Ally's departments, phone numbers, mailing addresses and other contact information to get you the support and answers you need fast. The Vehicle Payoff Sample Letter form is a crucial document for individuals aiming to transfer their vehicle loan to the State Department Federal Credit Union. Make the payment payable to Santander Consumer USA and send it to the address listed on the pay stub attached to the bottom of your monthly statement. Auto Loan Monthly Payments. Call us or fill out an online auto loan application today! USPS Federal Credit Union is open to Postal Service employees and select groups within 50 miles of a branch.