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.
PIT-5338
Service Bulletin/Repair Instructions
GMC/CADILLAC/CHEVROLET: SOME VEHICLES ARE EXPERIENCING, AFTER A COLD SOAK IN COLD TEMPERATURES, LOSS OF 12 VOLT BATTERY POWER, INDICATOR CHARGING SYSTEM LAMP ON, NO POWER STEERING ASSIST AND DRIVER INFORMATION CENTER (DIC) DISPLAYING POWER STEERING MESSAGE. MODEL 2008-13 TAHOE, SILVERADO HYBRIDS, ESCALADE HYBRID, SIERRA, YUKON HYBRIDS. *PE
PI-1191
Service Bulletin/Repair Instructions
GM: IMMEDIATELY AFTER START AFTER A COLD SOAK IN COLD AMBIENT TEMPERATURES, DISPLAYED MESSAGES SERVICE POWER STEERING AND SERVICE HYBRID SYSTEM. MAKE: CADILLAC/CHEVROLET/GMC MODELS: HYBRIDS ESCALADE/TAHOE/SILVERADO/SIERRA/YUKON MODEL YEARS 2009-2013 *JS
PI-0018-B
Service Bulletin/Repair Instructions
GENERAL MOTORS: THE WINDOWS, FRONT AND REAR, WOULD BIND, POOR FIT, MISALIGNMENT, MAKES RATTLE OR SQUEAKING NOISES, MOVES SLOWLY AND IS INOPERATIVE. MODEL 2008-2014 VEHICLES AND TRUCKS. *PE
SB12-08-132-001A
Service Bulletin/Repair Instructions
GENERAL MOTORS: ON SOME TRUCKS AND PASSENGER VEHICLES, ACCESSORY POWER OUTLETS (APO) AND TRAILER LIGHTING ARE COMMON ACCESSED ELECTRICAL SYSTEMS THAT ARE AFFECTED BY DEVICES THAT ARE PLUGGED IN AND BECOME INOPERATIVE DUE TO AN OPEN FUSE AND NO PROBLEM WITH VEHICLE IDENTIFIED. MODELS YEARS 2010-2014 TRUCKS AND PASSENGER. NO MODELS. *PE