Business ProfileforMAGEE AUTOPLEX

I brought my 2007 Chevrolet Avalanche to Chevrolet's service department in Franklinton. My vehicle had some issues that needed to be addressed, so I felt it was best to allow a qualified team of experts at Chevrolet to address my vehicle's issues. On 4/19/22, I paid Chevrolet $100 to diagnose the issue that my vehicle was encountering. The service department diagnosed that the issue for the engine misfire was "the catalytic converter coming apart" and told me that it needed to be replaced so the misfire issue would cease. The total amount to replace the catalytic converter was $1,848 plus tax for parts and labor. Although it was a costly fix, we decided that because we were dealing with professionals who could pinpoint the problem, our issue would be repaired based on the diagnostic we paid to receive. We allowed Chevrolet to make the repairs; however a day later Chevrolet called us and said they were done, but it was still misfiring. As a consumer, we made the investment based solely on the professional recommendation from Chevrolet. Now, they are asking for additional money, which led us to wonder what we paid for to get diagnosed. It occurred to us that this Chevrolet dealership simply made a "guess" based on a diagnostic scan tool, but did not follow proper diagnostic procedures. As an upset consumer, we opened a case with Chevrolet Headquarters under case #9-7692821922. We learned from Chevrolet headquarters that the proper steps to take when diagnosing a vehicle includes "reproducing the problem or duplicate the issue" and "verifying the cause" which was not done. Chevrolet headquarters confirmed that they didn't see any tech cases opened under our VIN #. Opening a tech case with the Chevrolet engineers would have confirmed that the diagnosis was correct and complete. The dealership had available support, but did not use it. Our vehicle is still there and we want them to fix it without more money due to their misdiagnosis & burden it caused.