Service Bulletins Posted August 15th, 2016 by gumcadmin. Service Bulletins 12-6-20 12-13-20 12-20-20 12-24-20 3 PM CHRISTMAS-EVE 12-24-20 7 PM CHRISTMAS-EVE 12-24-20 10 PM-CHRISTMAS-EVE 12-27-2020 1-3-21 1-10-21 1-17-21 1-24-21 1-31-21 2-7-21 2-14-21 2-21-21