Chevrolet Silverado 1500 2022–2023 — technical service bulletin
Bulletin 23-NA-048 · NHTSA communication 11007939 · issued Aug 23, 2024
Technical service bulletin
communication type
Engine
component
2022–2023
model years
4
vehicle entries
Official summary
This service bulletin provides a procedure to replace the rear crankshaft seal ito correct a customer concern of an oil leak from the center of the vehicle.
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.