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
010864014
Service Bulletin/Repair Instructions
SUBJECT REGARDING DOOR MANUAL LOCK LEVER DISENGAGES FROM DOOR TRIM PANEL (REPAIR LOCK LEVER) *JG
010864015
Service Bulletin/Repair Instructions
INFORMATION REGARDING FRONT AND REAR SIDE ACCESS DOOR NOISE. *YH
270901
Service Bulletin/Repair Instructions
SOME VEHICLES EQUIPPED WITH 4-WHEEL DRIVE EXTENDED CAB AND SHORT BED MAY EXPERIENCE A BUMP OR CLUNK ON STOP OR ACCELERATION. *SLC
100901
Service Bulletin/Repair Instructions
VEHICLES MAY EXPERIENCE THE BRAKE SYSTEM WARNING LIGHT NOT ILLUMINATING. *SLC
200801
Service Bulletin/Repair Instructions
INFORMATION REGARDING REVISED TRANSMISSION CALIBRATION TO ADDRESS DRIVELINE GROWL OR PROP SHAFT RING NOISE. *JG
160801
Service Bulletin/Repair Instructions
SUBJECT REGARDING NEW DOOR CHECK LINK. *JG
130801
Service Bulletin/Repair Instructions
INFORMATION REGARDING CUSTOMER ENHANCEMENTS. *JG