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
000604025A
Service Bulletin/Repair Instructions
SUBJECT REGARDING ABS LIGHT ON AT HIGH SPEEDS (ABOVE 70 MPH OR 113 KM/H), CODE C0237 SET. *TT
000604025
Service Bulletin/Repair Instructions
SOME CUSTOMERS MAY COMMENT THAT THE ABS LIGHT COMES ON AT HIGH SPEEDS (ABOVE 70 MPH OR 113 KM/H). UPON INVESTIGATION, A DIAGNOSTIC TROUBLE CODE C0237, REAR WHEEL SPEED SIGNAL ERRATIC, WILL BE FOUND. *TT
00014
Service Bulletin/Repair Instructions
INFORMATION REGARDING BODY SIDE MOLDING OMITTED. **MR
3170E
Service Bulletin/Repair Instructions
IPC, INTERIOR LIGHTS AND/OR HEADLAMPS FLICKER. *AK FB2