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-3665-A
Service Bulletin/Repair Instructions
GENERAL MOTORS: ON ALL 1988-2009 FULL SIZE CHEVROLET/GMC PICKUPS, UTILITIES AND VANS, THE BRAKE PEDAL WILL MOVE DOWN OR SELF APPLY DURING FULL LOCK TURNS OR NEAR FULL LOCK TURNS. CHEVROLET ASTRO AND GMC SAFARI VANS; HUMMER 2 ARE INCLUDED. *PE UPDATED 5/24/11. *PE
020730024A
Service Bulletin/Repair Instructions
DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT
01667
Service Bulletin/Repair Instructions
WINDOW REGULATOR MOTOR DOES NOT FIT. *TT
990730016A
Service Bulletin/Repair Instructions
DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN. *TT
376105
Service Bulletin/Repair Instructions
COLD ENGINE KNOCK. *TW
467108
Service Bulletin/Repair Instructions
TRANSMISSION EXTENTION SEAL LEAKS. *TW