Address:
1000 Davey Road
Suite 800
Woodridge, Illinois 60517

Phone:
1-800-365-0088

International® and IC Bus® Dealer Personnel:
Please open a Tools iKNow Case File.

Other Customers:
PSC@Navistar.com

Hours of operation:
Live Phone Support - 11:00 AM - 4:00 PM CST Monday-Friday
Voicemail, Email and Case File - 7:30 AM - 4:00 PM CST Monday-Friday