Took my car with the check engine light into their...

Took my car with the check engine light into their service department for service. Representative there was more interested in Nickel and Diming me rather than taking care of the problem I needed help with. He tried to get me to change out my tires and talked about an oil change, but I just wanted the check engine light repaired. The guy said the issue was with the solenoid valve and replaces that for 300+ dollars.

Two days later the check engine light comes back on AGAIN, and now says that the car software patch/upgrade and it s because of the second code going off. Not only did this happen right away, the guy charges me another 150+ dollars. This place is a scam. I have no faith they resolved the issue, and this is why I won t be coming back here and why I m not buying another GM vehicle.