No appointments are necessary for express service, but are encouraged. Walk-ins are welcome, but waiting times may vary based on number of vehicles already in queue. Concerns that require diagnostics could take 2-3 business days or more. Without knowing the cause of the concern, diagnostics must be completed to determine how long the service will take and to know if parts will need to be ordered. Appointments are time slots to meet with your Service Advisor to check in your vehicle for service, in many cases, the service will not be completed on the same day.