5 /5 Linda Ann Adams: I love going to Clayton Valley Auto Service as Jeff and all those who work there are friendly, knowledgeable and do a very good job. When I had a check engine light Jeffs dad told me right off the top that it could be 4 or 5 different things and they would start out with the least expensive until they found out what the trouble was. Im still driving that van around 5 years later. I really appreciate the great service they give. They are really great for routine maintenance, and wonderful when I have emergencies.