← All engines
Recalls and bulletins
Duramax L5P (2017-present) recalls and service bulletins
4 NHTSA safety recalls name this engine. Each entry shows the campaign number, the model years, what was wrong and what the fix is.
Check a specific truck: enter its VIN at
nhtsa.gov/recalls for open safety recalls, and ask a dealer about emissions recalls and coverage programs, which NHTSA's lookup does not always show. Recall repairs are free on an eligible VIN.
Safety recalls (NHTSA)
Newest first. NHTSA's own summary and remedy text, for the models and years this engine was sold in.
24V-797
Safety recall
October 24, 2024 · maker's number N242454440 · 2020-2022
General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.
Risk and remedy
Risk: Rear wheel lock-up can increase the risk of a crash.
Remedy: Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.
Models in our scope: SIERRA 2500, SIERRA 3500, SILVERADO 2500, SILVERADO 3500
23V-047
Safety recall
February 2, 2023 · maker's number N222368030 · 2017-2019
General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 vehicles equipped with a dual fuel tank option. The rear fuel tank may collapse and prevent the fuel pump from transferring fuel to the front tank, resulting in an engine stall.
Risk and remedy
Risk: An engine stall increases the risk of a crash.
Remedy: Dealers will inspect the fuel tank and fuel pump module, replacing them as necessary. Dealers will also add a vent hose to the rear tank assembly. Repairs will be performed free of charge. An interim owner notification letter informing owners of the safety risk was mailed on March 15, 2023. Owner notification letters were mailed June 21, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N222368030.
Models in our scope: SIERRA 2500, SIERRA 3500, SILVERADO 2500, SILVERADO 3500
21V-496
Safety recall
July 1, 2021 · maker's number 212329840 · 2017-2019
General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500 and 2017-2019 GMC Sierra 2500 and 3500 vehicles equipped with a Duramax diesel 6.6 liter engine and an optional engine-block heater cord. An electrical short-circuit may occur in the engine-block heater cable or in the terminals that connect the heater cable to the block heater.
Risk and remedy
Risk: An electrical short-circuit can increase the risk of a fire.
Remedy: Dealers will replace engine block heaters and heater cords. Vehicles that have this feature disabled as a remedy to the safety condition will be contacted and offered replacement block heaters and heater cords under a separate customer satisfaction program, free of charge. GM will provide free replacement block heaters and cords under a separate customer satisfaction campaign. For vehicles previously included in recall 19V-328, the heater cord will be replaced and rerouted, free of charge. Interim owner notifications were mailed on August 13, 2021. Owner notification letters are expected to be mailed on April 4, 2022. Customers may call GMC customer service at 1-800-462-8782. GM's number for this recall is 212329840.
Models in our scope: SIERRA 2500, SIERRA 3500, SILVERADO 2500, SILVERADO 3500
19V-328
Safety recall
April 25, 2019 · maker's number N182206310 · 2017-2019
General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and 3500 vehicles equipped with Duramax 6.6 liter diesel engines and an optional engine-block heater. The engine block heater cord or the terminals that connect the heater cord to the block heater may short circuit and fail.
Risk and remedy
Risk: A short-circuit may damage the engine components and increase the risk of fire.
Remedy: GM will contact owners, dealers will replace the engine block heater, free of charge. Additionally, in Chevrolet Silverado 2500 and 3500 vehicles, dealers will install a new rerouted heater cord. The recall began December 11, 2019. Owners may contact GM customer service at 1-586-596-1733. GM's number for this recall is N182206310.
Models in our scope: SIERRA 2500, SIERRA 3500, SILVERADO 2500, SILVERADO 3500
Bulletins, programs and coverage
Manufacturer service bulletins, special coverages, programs and emissions recalls that bear on this engine's documented failures. Identifier, date and scope only; bulletin text is the manufacturer's.
No manufacturer bulletins are documented in our records for this engine yet. That is a gap in our records, not proof that none exist.