Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
SB-10-08-50-003B
Service Bulletin/Repair Instructions
GENERAL MOTORS: INFORMATION PROVIDED BY BULLETIN FOR ALL 2012 AND PRIOR GENERAL MOTOR TRUCKS AND PASSENGER VEHICLES REGARDING THE ADJUSTABLE COMFORT AND CUSTOM UPHOLSTERY OF THE DRIVER AND THE PASSENGER HEAD RESTRAINT. *PE
010850011
Service Bulletin/Repair Instructions
MEMORY POWER SEAT INOPERATIVE. *YH
010232005
Service Bulletin/Repair Instructions
INFORMATION ON WHINE NOISE FROM POWER STEERING SYSTEM DURING VEHICLE START UP. *JB