One problem related to manifold/header/muffler/tail pipe has been reported for the 2010 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Chevrolet Impala based on all problems reported for the 2010 Impala.
2nd air injection check & shut off valve has failed for the 3rd time on this vehicle. I contacted a friend of mine at gm and a global technical specialist in the exhaust manifolds/heat shields/sai division of the general motors global propulsion systems stated that there was a corrosion durability concern with this part that resulted in elevated warranty. There is now a improved service pn available that replaces the pn that have been used in my vehicle. I feel that gm should recall these bad parts and refund us for them. Each time this part needs to be replaced the cost is over $400 to me. My first replacement part went on 1-30-13 at 46737 miles. The 2nd replacement part went on 7-8-14 at 71368 miles. Now the 3rd replacement part needs to go on at 115429 miles. The 1st replacement part cost me $567 to replace at the dealership. The 2nd replacement part cost me $478 to replace at an independent shop. It will cost me the same or a little more to get this replaced for the 3rd time. Is there anything that you can do to help me?.