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
010730010
Service Bulletin/Repair Instructions
THE PURPOSE OF THIS BULLETIN IS TO HELP TECHNICIANS DETERMINE WHEN A TORQUE CONVERTER SHOULD BE REPLACED ON ALL 2001 AND PRIOR GM PASSENGER <A TITLE="CLICK FOR MORE INFORMATION ABOUT CAR" STYLE="TEXT-DECORATION: NONE; BORDER-BOTTOM: MEDIUM SOLID GREEN;" HREF="HTTP://SEARCH.TARGETWORDS.COM/U.SEARCH?X=5977|1||||CARS|AA1VDW">CAR</A>S AND TRUCKS. *TT *AR
011200
Service Bulletin/Repair Instructions
SOME LIGHT DUTY TRUCKS EQUIPPED WITH 4L60E AUTOMATIC TRANSMISSION MAY EXHIBIT A TRANSMISSION SHIFT LEVER THAT IS DIFFICULT TO GET OUT OF THE PARK POSITION. THIS CONDITION IS MOST LIKELY TO OCCUR WHEN THE VEHICLE IS PARKED ON AN INCLINE OR WHEN A TIRE IS COMPRESSED AGAINST A CURB. *TT