Reprograming Cadillac ECM

    May 22, 2025
    Certain 2020-2021 Cadillac XT4 vehicles equipped with a 2.0L diesel engine may have a condition where the diesel particulate filter (DPF) sensor indicates a high soot loading.
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    Photo courtesy of General Motors
    Reprogram the ECM. Refer to K20 Engine Control Module, programming and setup in the service manual.
    Reprogram the ECM. Refer to K20 Engine Control Module, programming and setup in the service manual.

    Certain 2020-2021 Cadillac XT4 vehicles equipped with a 2.0L diesel engine may have a condition where the diesel particulate filter (DPF) sensor indicates a high soot loading.

    This could cause a DTC P244B to set, resulting in reduced power. Reprogram the ECM. Refer to K20 Engine Control Module, programming and setup in the service manual.

    About the Author

    Mike Mavrigian | Motor Age Editor

    Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

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