A Service Advisor is a professional who assists customers at a car dealership to understand their car's maintenance or repair options and answers customer questions before they are scheduled with a Technician. One of the primary responsibilities of a Service Advisor is to greet customers as they arrive at the service department. They listen to the customer's concerns about their vehicle, and then use their technical knowledge to diagnose the problem. A Service Advisor is a professional who assists customers at a car dealership to understand their car's maintenance or repair options and answers customer questions before they are scheduled with a Technician.