1-800-52-VOLVO Volvo Action Service (VAS) Support Center If you need assistance on the road or if you need service repairs, contact the VAS support center. VAS is available 24 hours per day, 7 days per week at 1-800-528-6586 . Please report the specific nature of the service problem to the Volvo Customer Support Specialist, who will answer your questions and arrange for the assistance you need. Truck Model & Serial Engine Model & Serial Transmission Model & Serial Rear Axle Model & Serial Your Truck Was Delivered By: