"Jolting" at 45-55 MPH; 2009 Aveo Hatchback

[avguy]

Has the recall for coil packs/spark plugs been done yet for this Aveo? If you don't know, call a Chevy dealer and give them your vin. If the recall hasn't been done, take it in ASAP because you're probably throwing raw gas into the cat, which will destroy it fairly quickly. The recall will be done N/C to you.