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Service bulletin PIP5938

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 id10242307
Published by NHTSA2023-09-18
Manufacturer's numberPIP5938
Manufacturer's date2023-08-22
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION

NHTSA's summary

This Preliminary information communicates information regarding normal debris that could be found in the engine oil or engine oil pan during service generated by the wet belt system wear in.

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

Engine, Engine oil and lubrication

Vehicles listed
BUICK ENCORE GX2020, 2021, 2022, 2023, 2024
BUICK ENVISTA2024
CHEVROLET TRAILBLAZER2021, 2022, 2023, 2024
CHEVROLET TRAX2024

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
22NA0092022-05-31. Service bulletin. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
18NA1502022-05-31. Service bulletin. This informational bulletin provides information on 6.6L Duramax Possible Oil Leak Path Information.
16NA2222022-05-31. Service bulletin. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
010601011L2021-03-01. Service bulletin. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
PIP57342020-08-10. Service bulletin. This Preliminary information communicates to the dealer a testing procedure to isolate a potential Engine Oil Pump Switching issue.