This manual provides all applicable users a detailed guide to the processes and procedures involved in the various credit union transactions. Apply for a Georgia United Credit Union vehicle loan, credit card, mortgage, student loan and more with our easy online application.Forms and Applications. Fill out the fields in the form to the right. One of our representatives will contact you within one business day to complete the process. Just fill out an application online or print and mail it to the credit union. Find a car you love? Northside FCU Loan Application. Will this be a Single or Joint Application? Just fill out an application.