Chevrolet Silverado 2500 2024 — technical service bulletin
Bulletin N232415860 · NHTSA communication 10242561 · issued Sep 20, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2024
model years
4
vehicle entries
Official summary
Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles with a 6.6L diesel engine. The Engine Control Module (ECM) may not properly adjust fuel injector flow for the normal variation in fuel injector flow rate characteristics. This could result in rough engine idle or increased fuel consumption. Dealers are to update the ECM with improved fuel injector flow rate data by performing Fuel Injector Flow Rate Programming with the diagnostic scan tool.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.