CUMMINS

TSB210020-011320

2022-01-13 · NHTSA 10212542

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

This Technical Service Bulletin describes the verification and resolution of an issue with Allison Transmission® Fault P2637 being caused by the Engine Control Module (ECM) Calibration. Cummins is releasing ECM calibration revisions that reduce occurrences of Allison Transmission® fault P2637.

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