I recently took my Malibu with an aluminum V6 DOHC into Ross Downing Chevrolet for service. I told Assistant Service Manager Mike Terry that it had overheated, and that it has a blown head gasket. I was convinced of it. Mike is a mechanic, who specializes in the internal workings of the combustion engine. He knows his stuff. He listed a bunch of tests he would like to do on the car, but I knew it was a blown head gasket. I asked how much it would cost to repair the head gasket. It could run into the thousands of dollars. I cannot tell you my relief when Mike called me the next day and told me it was only a loose wire, and I was only charged for the corresponding diagnostic tests which were performed. Everyone I have dealt with at Ross Downing is very nice, and I can now confirm their service department is honest. You can trust them for an honest evaluation of your car’s problems. I do. My faith in Chevrolet is renewed.