GM Financial allows online payments through GMfinancial.com, although a Western Union fee may be charged, according to GM Financial in 2015. A customer must register for an account before being able to pay online.
Customers who pay via debit or ATM cards pay a fee, explains GM Financial. Those who pay via bank account withdrawals do not need to pay a fee. A customer must enter his nine-digit bank routing number, bank account number and the payment amount. GM Financial can store the bank information to make future payments easier and quicker. Customers can also pay via phone, or fill out a form to register for automatic payments.