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-020842001B
Service Bulletin/Repair Instructions
GENERAL MOTORS VEHICLES AND TRUCKS: SUBJECT REGARDING, 2002 AND PRIOR PASSENGER CARS AND TRUCKS, CHEMICAL DAMAGE TO EXTERIOR POLYCARBONATE HEADLAMP LENSES. *SLC UPDATED *EH UPDATED 3/30/11. HEADLAMP LENS OVERHEATING WHEN COVERED AND CHEMICAL DAMAGE TO EXTERIOR POLYCARBONATE HEADLAMP LENSES. CAN CAUSE CRAZING OR CRACKING OF HEADLAMP LENS. *PE UPDATED 6/24/11. *PE UPDATED 5/14/12. INCLUDING 2013 MODEL YEAR. *PE
050310003
Service Bulletin/Repair Instructions
LOW TIRE PRESSURE, LEAKING CAST ALUMINUM WHEELS (REPAIR WITH ADHESIVE SEALANT). 2008 AND PRIOR GM PASSENGER CAR AND LIGHT DUTY TRUCKS (INCLUDING SATURN) AND HUMMER H2, H3 AND SAAB 9-7X WITH CAST ALUMINUM WHEELS. *NJ UPDATED 10/23/09. *PE
08089-B
Service Bulletin/Repair Instructions
GENERAL MOTORS CORP: SPECIAL COVERAGE ADJUSTMENT; ANALOG ONSTAR DEACTIVATION. *PE UPDATED 2/17/09. *PE
08-089
Service Bulletin/Repair Instructions
BUICK CADILLAC CHEVROLET GMC HUMMER OLDSMOBILE PONTIAC SAAB SATURN SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SPECIAL COVERAGE ADJUSTMENT-ANALOG ONSTAR DEACTIVATION. FCC RULED IN 2002 WIRELESS CARRIERS WOULD NO LONGER RE REQUIRED TO SUPPORT ANALOG WIRELESS NETWORK STARTING IN 2008. *PE CSC LETTER WAS RECEIVED. UPDATED 12/1/08. *PE