Service Appointment Request GENERAL SERVICE POLICY: We are ready to help our valued customers when a mechanical failure occurs by providing service on a first come, first serve basis. To follow the “factory maintenance schedule” or to schedule other preventive service work, please complete the information below and one of our service advisors will call you to confirm your appointment. Be assured, we will make our best effort to accommodate your service needs. Lunghamer Buick GMC of Waterford | Serving Clarkson and Highland MI | Home