just had my ECM replaced on my 2010 cobalt. The next day my check engine light came back on. Now the dealership wants $1200 to replace the catalytic converter. Any advice?
Try an independent shop for a second opinion, stay away from dealers after the warranty is up. You can get a lot better service and more bang for your buck at an independent shop, check the reviews on local shops, if you find one that looks and sounds good then give them a call.
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