Not professional mechanics. I took my vehicle for ...

Not professional mechanics. I took my vehicle for a check up on a problem. To cut it sort they lied about the problem plus tried to change part was not necessary. So I took the vehicle to a local mechanic to have it check no parts need to be replaced at all. Plus he fix the problem in less than 30min. I even thought that the GM service mechanic that check my vehicle was not professional or certified GM THANK YOU FOR LOOSING TRUST IN U