Chart based on 132 GMC Sierra HD and 20 Pontiac Sunfire repairs.
Chart based on 110 GMC Sierra HD and 18 Pontiac Sunfire 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 Sunfire 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 Sunfire Problems and Repair Histories