Losing your drivers license is a common consequence for non payment of child support, and a consequence that may occur in all 50 states. If you find yourself in this position, you will need to know the rules for your particular state regarding how to get DL back from child support suspension.
As a general matter, the first step to getting your drivers license back if it was suspended or revoked because you didn't pay your child support will be to pay your back child support. Usually, this means paying in full and taking care of the total amount of back payments that you owe. If this is not possible, then arranging a repayment plan and making good faith payments to show you are serious about the plan may also work to help you to get your drivers license back.
After you have repaid the unpaid support you owe, and/or arranged a payment plan, then you will generally need to petition the court to give you back your license. In some states, you may need to pay a reinstatement fee as well as to prove that you have paid the back support. If the person to whom you owed child support is willing and wants you to get your license back, an affidavit or petition from that person can also go a long way towards helping you to get back your license, especially if you haven't yet paid in full the total amount that was owed.
For help throughout this legal process, consulting with a lawyer is always a good idea.