Trucker Gear LabHands-on semi truck gear reviews
By the Trucker Gear Lab crew · 10 buying guidesAs an Amazon Associate I earn from qualifying purchases.

10 products

Diagnostics & Shop Tools

Knowing what that check engine light means before you call the shop puts you in charge of the repair bill instead of guessing.

Before you buy: Make sure it reads J1939 and J1708 heavy-duty protocols and covers your engine make. A car-only OBD2 reader won't talk to most Class 8 trucks.

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