To update personal information on a GAINSCO policy, a customer generally needs to access their online account or contact their customer service. Typically, logging into the customer account on the GAINSCO website allows for changes to be made directly to personal details, such as address, phone number, or email. If a customer is unable to access their account or prefers assistance, they may find it helpful to review the contact options available on the GAINSCO website. This may include phone support or online chat options. It is essential to ensure that all information is accurate and up to date to avoid any complications with coverage or claims. Always check the official website for the most current procedures and contact information, as policies may vary.