I bought my Chevy Suburban at Cavender Chevrolet and had it in for a service issue. They gave an extremely high estimate to fix it and I decided to get another opinion. After paying $120 diagnostic fee(rip-off), I took it to another dealer and they told me there was a recall for the TBI sensor. They replaced the sensor under the recall and cleaned the TBI for $50. I will never go back to Cavender Chevy for service again.