Chart based on 132 GMC Sierra HD and 359 Pontiac G6 repairs.
Chart based on 110 GMC Sierra HD and 264 Pontiac G6 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Don't infer GMC Sierra HD or Pontiac G6 problem frequency from what you see on this page. Many lucky owners have had no repairs, and their cars are not shown.
GMC Sierra HD and Pontiac G6 Problems and Repair Histories