Stopping Chevy Transmission Leak

    Aug. 19, 2024
    This bulletin applies to 2020-2024 Chevy Silverado 2500HD/3500HD trucks equipped with an L5P or L8T engine and MGM, MGU or MKM transmission.
    Related To:
    Photo courtesy of Chevrolet
    According to GM, if the leak has been verified to be coming from the front cover seal, replace the automatic transmission case front cover seal P/N 24277112 and the torque converter fluid seal P/N 24293986.
    According to GM, if the leak has been verified to be coming from the front cover seal, replace the automatic transmission case front cover seal P/N 24277112 and the torque converter fluid seal P/N 24293986.

    This bulletin applies to 2020-2024 Chevy Silverado 2500HD/3500HD trucks equipped with an L5P or L8T engine and MGM, MGU or MKM transmission.

    You may find transmission fluid leaking from the bellhousing inspection cover. This condition may be caused by the automatic transmission case front cover seal being rolled or damaged.

    According to GM, if the leak has been verified to be coming from the front cover seal, replace the automatic transmission case front cover seal P/N 24277112 and the torque converter fluid seal P/N 24293986.

    About the Author

    Motor Age Staff

    Motor Age has been publishing technical content for professional automotive technicians since 1899. Our writers have decades of experience and scores of ASE certifications, and they continue to teach new generations of technicians via classrooms all around the globe, as well as through the books and training manuals they've authored. 

    Email

    Continue Reading

    Sponsored Recommendations

    Learn how electronic parking brake actuators have replaced manual systems and now play a key role in advanced safety features like automatic emergency braking. This WIYB Training...
    Not all fuel injectors are created equal. In this WIYB Training Series, we compare Standard® Fuel Injectors against OE, low-cost imports. See why precision engineering and rigorous...
    Carrying active OEM subscriptions for all manufacturers is not possible for many shops. However, access to this software is required for certain modern vehicles and repairs, and...
    Enhance your collision repair workflow with Autel’s IA900, a process-driven solution integrating precision alignment, bi-directional diagnostics, and ADAS calibration. Designed...

    Voice Your Opinion!

    To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!