Home Banking The Credit Union has begun a security feature called Multi-factor Authentication.  This new enhanced login has replaced our past process and will provide a higher level of security for your on line access.  Browser requirements: Internet Explorer 6.0 or higher, FireFox 1.5 or higher, Netscaper6.1 or higher and your cookies must be enabled in order to access this site. Check Your GRBTCU VISA Card Online ATM and Shared Branch Locations Holiday Closings Closing at 12:30 Good Friday, April 2nd Hours and Location We are open Monday - Wednesday 8:30 AM to 5:00 PM and Thursday and Friday 8:30 AM to 5:30 PM We are located at 4555 West River Dr, Comstock Park, Michigan, 5 miles north of downtown Grand Rapids. Conveniently located just one block east of US 131.     AnnualCreditReport.com is the official site to help consumers to obtain their free credit report.