Chevrolet Silverado 1500 2023 — technical service bulletin
Bulletin PIP5873A · NHTSA communication 10231639 · issued Jan 11, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2023
model years
2
vehicle entries
Official summary
This Preliminary information communicated to the dealer of an exchange program that was placed on the 3.0L LZ0 engine in the 2023 Siverado and Sierra but has ended as of 1/10/2023
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.