Recalls are issued when it is determined that a certain type of vehicle has a defect that might pose a safety risk to the occupants of the vehicle or others on the road.
Technical Service bulletins, like this one, are posted when there is a particular issue happening again and again whether it's related to safety or not. This will help the technician identify the issue and fix it quickly.
PLEASE do not send questions via Profile comments or Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).