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Service bulletin PIP5945

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10246026
Published by NHTSA2023-12-04
Manufacturer's numberPIP5945
Manufacturer's date2023-10-27
NHTSA componentPOWER TRAIN:MANUAL TRANSMISSION:INTERNAL:SHAFT:OUTPUT

NHTSA's summary

This Preliminary information communicates how to inspect and verify propeller shaft phasing concerns on Medium Duty Silverado's

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline, Manual transmission

Vehicles listed
CHEVROLET SILVERADO 45002019, 2020 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
N2223765902022-08-02. Service bulletin. Service Update - certain vehicles may have a transmission control module that may not have been correctly programmed. Dealers are to reprogram the transmission control module.
PIP58102021-09-13. Service bulletin. This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development.
990420002L2021-08-09. Service bulletin. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
030729004L2019-05-20. Service bulletin. This informational bulletin provides normal operating characteristics and diagnostic information on Manual transmissions.