Pontiac GTO TSBs
The GTO has been assigned 591 technical service bulletins (TSB). The 2006 model year has been involved in the most bulletins.
TSBs contain recommended steps and procedures for diagnosing or repairing a known problem. They are issued directly by Pontiac to service technicians. You'll often see TSBs used as evidence in lawsuits when owners feel the automaker should help with repairs.