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.
PIT3271G
Service Bulletin/Repair Instructions
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
PIC3718E
Service Bulletin/Repair Instructions
This Preliminary Information communication provides information to the technician about vehicles may have a no power or no connect concern. Technician will find that the OnStar led is red and Diagnostic Trouble Code U1500 is set. Technician will need to replace the Vehicle Communication Interface Module if the Station Identification number falls in the ranges 14,000,000 - 16,000,000 or 22,000,000 - 23,200,000.
SB-12-J-005
Service Bulletin/Repair Instructions
ISUZU (CHEVROLET/GMC): TRUCKS WITH DIESEL ENGINE WOULD HAVE IDLE VIBRATION, TROUBLE STARTING, ENGINE NOT REVVING UP, AND A LACK OF POWER DUE TO POSSIBLE OPERATION CONDITION OF SUCTION CONTROL VALVE (SCV)/FUEL RAIL PRESSURE (FRP) REGULATOR BEING INTERMITTENT. MODELS 2004-2010 CHEVROLET/GMC C, T, W SERIES AND ISUZU F, H, N SERIES. *PE
05-09-40-002E
Service Bulletin/Repair Instructions
GM: SERVICE BULLETIN EXPLAINING WHEN THE SAFETY BELTS ARE SUPPOSED TO LOCK. *RM UPDATED 12/6/11. *PE
CB-10X001
Service Bulletin/Repair Instructions
ISUZU SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. VOLUNTARY EMISSION SUPPLEMENTAL LABEL RECALL. VEHICLES WERE BUILT WITH THE ENGINE EMISSION LABEL INSTALLED IN A LOCATION THAT IS VISUALLY OBSTRUCTED BY THE AIR CLEANER. LABEL CAN BE INSTALLED ON THE UNDERSIDE OF THE HOOD. CSC LETTER WAS RECEIVED. *PE