Chart based on 277 Hummer H3 and 436 Chevrolet Cobalt repairs.
Chart based on 200 Hummer H3 and 282 Chevrolet Cobalt repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Don't infer Hummer H3 or Chevrolet Cobalt problem frequency from what you see on this page. Many lucky owners have had no repairs, and their cars are not shown.
Hummer H3 and Chevrolet Cobalt Problems and Repair Histories