Diagnostics - Heavy Duty Truck Service

Check engine, ABS, or other warning light on in your dash? Exhaust aftertreatment problems, EGR, DPF, DEF, SCR fault codes? We have the latest diagnostic software available, and the experienced technicians to diagnose and repair your issues.


Vander Haag's Inc has multiple midwest locations with Service Shops, Part Sales, and is a licensed Truck & Trailer Dealer. Click on a location for more information. Locations include: