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Our Service Area

Located in Smithville and serving diesel owners across the Kansas City area.
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G3 Transmission and Diesel is based in Smithville and regularly works with diesel trucks from across the Kansas City area. We work on Powerstroke, Duramax, and Cummins platforms with a focus on proper diagnostics, reliable repairs, performance work, ECM tuning, TCM tuning, and supporting drivetrain upgrades.

Services We Offer:

  • Diesel diagnostics

  • Fuel system diagnostics and repair

  • Injector and high pressure pump issues

  • Turbo diagnostics and upgrades

  • ECM and TCM tuning

  • Diesel performance builds

  • Drivability and limp mode diagnosis

  • Transmission support for diesel trucks

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