Chevrolet Silverado 2500 2020–2023 — technical service bulletin
Bulletin PIP5711C · NHTSA communication 10232791 · issued Feb 6, 2023
Technical service bulletin
communication type
Back Over Prevention
component
2020–2023
model years
8
vehicle entries
Official summary
This Preliminary information communicates to the dealer technicians a warm engine knock noise has no short or long term effects on the engine. Do not attempt repairs for this noise.
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.