2010 GMC Savana 2500 Cargo Owner's Manual - Page 118

To open the front portion of a 60/40 door from the inside, pull the handle toward you and push the door open. To open the rear portion of a 60/40 door from the outside, pull the handle on the side of the rear door and pull the door toward you. To close the 60/40 side doors, close the rear door first. Then close the front door. Check to make sure that both doors are completely closed. The front side swing-out door has a check strap assembly in the door frame to keep the door from opening beyond 90 degrees. To open the door beyond 90 degrees, close the door partially, pull the check strap toward you and then open the door. When the door is closed, the check strap will automatically re-engage. 3-14