Chevrolet Malibu auxiliary transmission pump replacement issue with engine light code 2796 on Chevrolet Malibu

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Chevrolet Malibu owners report experiencing issues related to engine light code P2796, which indicates a problem with the auxiliary transmission fluid pump control circuit. These issues may stem from a faulty auxiliary transmission fluid pump, an open or shorted harness, or poor electrical connections. Owners often find it necessary to inspect the auxiliary transmission fluid pump for damage, check and replace clogged transmission fluid filters, and visually assess the wiring harness and connectors for any signs of wear or corrosion. Additionally, some owners may need to test and potentially replace the auxiliary transmission fluid pump control module, as well as inspect the electronic transmission fluid auxiliary pump and its control circuit for damage or loose connections. After addressing these concerns, it is recommended to clear the error code from the vehicle's computer, conduct a road test to confirm the resolution, and ensure the transmission control module functions properly while verifying transmission fluid levels and quality.

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