GM Financial processes most payments within one to two business days

When you send a payment to GM Financial, the time it takes to show up in your account depends on how you send it. A payment made online through their website or mobile app typically posts within one business day. A payment mailed by check can take five to seven business days to arrive and process, depending on postal delivery and GM Financial's processing queue. Payments made by phone with a representative usually post the next business day.

The key distinction is between when GM Financial receives your payment and when it posts to your account. A check might arrive at their lockbox on day three, but not post until day five or six. An online payment submitted at 11 p.m. on a Friday won't post until Monday. If you're cutting it close to a due date, the method you choose matters.

Key Takeaways

  • Online and phone payments to GM Financial post within one business day; mailed checks take five to seven business days total.
  • Payments submitted after business hours or on weekends don't begin processing until the next business day.
  • GM Financial's due date is the date the payment must be received, not the date it posts, so mail early if you use that method.
  • If a payment doesn't post within the stated timeframe, contact GM Financial directly to confirm receipt and ask for a reference number.
  • Late fees apply if payment is not received by the due date, even if you submitted it on time through a slower method.

Online and app payments post fastest

Paying through GM Financial's website or mobile app is the quickest route. You log in, enter the amount, confirm the payment method (bank account or debit card), and submit. The payment is typically processed and posted to your account within one business day. If you submit the payment before 5 p.m. Eastern time on a business day, it often posts the same day or by the next morning.

One important detail: if you pay from a bank account using the ACH network, GM Financial may hold the funds for up to one business day before they actually debit your account. This is standard practice and doesn't delay the posting to your loan—it just means your bank balance might not reflect the payment immediately. If you use a debit card, the charge appears in your bank account right away, but GM Financial still posts it to your loan within one business day.

Mailed checks require five to seven business days

If you mail a check, add time for postal delivery plus GM Financial's processing. A check typically takes two to three business days to reach their lockbox, then another two to three business days to be opened, scanned, and posted to your account. The total is usually five to seven business days from the date you mail it, though it can stretch longer if the check gets delayed in the mail or arrives during a high-volume processing period.

The due date on your statement is when GM Financial must receive the payment, not when you mail it. If your due date is the 15th and you mail a check on the 10th, it may not arrive until the 13th or 14th—which is fine. But if you mail it on the 14th, it likely won't arrive by the 15th, and you'll be charged a late fee even though you sent it on time. For mailed payments, mail at least seven business days before the due date to be safe.

Phone payments post the next business day

You can call GM Financial's customer service line and make a payment over the phone with a representative. Provide your account number, the amount you want to pay, and your bank account or debit card information. The payment is processed immediately and posts to your account by the next business day. The representative will give you a confirmation number—write it down or take a screenshot.

Phone payments are useful if you're close to a due date and need something faster than mail but prefer not to use the website. However, they're not faster than online payments, so if speed is the priority, use the app or website instead. Phone lines can also have wait times, especially near the end of the month.

What happens if your payment doesn't post on time

If you submitted a payment and it hasn't posted within the timeframe you expected, contact GM Financial before the due date. Have your confirmation number ready (from online, app, or phone payment) or the check number and mailing date. GM Financial can confirm whether they've received it and when it will post. If there's a delay, ask them to note your account that you submitted payment on time—this can protect you from a late fee if there's a processing error.

If a late fee is charged and you can prove you submitted payment before the due date, GM Financial may reverse it. Keep records of all payments: screenshots of online confirmations, photos of mailed checks (front and back), and confirmation numbers from phone payments. These documents are your proof if there's a dispute.

Late fees apply if payment isn't received by the due date

GM Financial charges a late fee if your payment is not received by the due date, regardless of when you submitted it. This is a critical distinction. If you mail a check on the due date, it won't arrive in time, and you'll owe a late fee. The amount of the late fee varies but is typically a percentage of your monthly payment or a flat fee—check your loan agreement or statement for the exact amount.

A late payment also affects your credit report. If the payment is more than 30 days late, it will show up on your credit history and can lower your credit score. If you know you'll miss a due date, call GM Financial immediately. They may offer a grace period, allow you to defer a payment, or work out a modified payment plan. It's always better to contact them before you're late than after.

ACH transfers and automatic payments

If you set up automatic payments through GM Financial, the payment is deducted from your bank account on the date you choose and posts to your loan within one business day. Automatic payments are reliable and remove the risk of forgetting to pay. You can set them up through the website or app and change or cancel them anytime.

Some banks also allow you to send an ACH transfer directly to GM Financial's bank account. This method works similarly to online payment—the transfer is initiated from your bank and posts to your loan within one to two business days. However, not all banks support this, and it's easier to use GM Financial's own payment system to ensure the payment reaches the right account.

Frequently Asked Questions

Can I make a payment on a weekend or holiday?

Yes, you can submit a payment through the website or app anytime, but it won't process until the next business day. If you submit a payment on Saturday, it processes on Monday. If Monday is a holiday, it processes on Tuesday. Phone payments can only be made during business hours on weekdays.

What if I pay extra toward my principal?

Extra payments post the same way as regular payments—within one business day for online, next business day for phone. Make sure to specify that the extra amount should go toward principal rather than future payments. You can usually do this through the payment notes or by calling to confirm.

Does GM Financial charge a fee for online payments?

No, GM Financial does not charge a fee for online or app payments. Phone payments are also free. Mailed checks are free, but your bank may charge you a fee for the check itself.

What if my payment is rejected?

If your bank account or debit card is declined, GM Financial will notify you, usually by email or phone. You'll need to resubmit the payment with valid payment information. The original submission doesn't count toward your due date, so resubmit immediately to avoid a late fee.

Can I get a refund if I overpay?

If you accidentally pay more than your monthly payment, GM Financial will credit the overage to your next payment or refund it. Contact them to request a refund if you prefer cash back rather than a credit to your account.