Diagnostic capability is brand-specific: the right software, adapter and cables depend on what's under the hood. Start at your brand's hub — or use the compatibility checker if you're not sure where your truck fits.
OEM brand hubs
One hub per manufacturer with coverage tables (engines, models, years), OEM-vs-multi-brand guidance, real pricing and FAQ — 1,500+ words of brand-specific detail per hub.
Multi-brand platforms
Prefer one tool for everything? The platform hubs cover all-makes diagnostics: Jaltest, JPRO, TEXA, Autel CV, Nexiq, Bosch ESI and budget scanners.
Specialty segments
Beyond on-highway: construction, agriculture, marine, forklifts, reefers, trailers, electric trucks and Chinese trucks.
OEM brand hubs
Frequently Asked Questions
Which brand hub should I start with?
The engine brand, not the truck brand: a Kenworth with a Cummins X15 starts at the Cummins hub; with an MX-13, the PACCAR hub. The VIN decoder identifies your engine if you're unsure.
Do I need a different tool for each brand in my fleet?
No — a multi-brand platform (Jaltest, JPRO) covers diagnostics across all brands; add OEM software only for the brands you program. The mixed-fleet guide explains the layering.