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Service bulletin 22-NA-232

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 id10239046
Published by NHTSA2023-07-11
Manufacturer's number22-NA-232
Manufacturer's date2023-06-14
NHTSA componentPOWER TRAIN; ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PUMP

NHTSA's summary

This informational bulletin advises the technician of a possibly noise coming from the transmission oil pump.

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, Transmission and driveline, Engine oil and lubrication

Vehicles listed
CADILLAC CT42021, 2022, 2023
CADILLAC CT52020, 2021, 2022, 2023
CADILLAC CT62019, 2020
CADILLAC ESCALADE2021, 2022, 2023
CADILLAC ESCALADE ESV2021, 2022, 2023
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CAMARO2020, 2021, 2022, 2023
CHEVROLET SILVERADO 15002019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2021, 2022, 2023
CHEVROLET SUBURBAN 15002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2021, 2022, 2023
GMC SIERRA 15002019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2021, 2022, 2023
GMC YUKON XL2021, 2022, 2023

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
19-NA-2182023-02-07. Service bulletin. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
PIE0651A2022-07-18. Service bulletin. Engineering Information.
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.
PIE0651A2022-01-03. Service bulletin. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to oil drops on the ground where their vehicle was parked that came from the underneath of the front of vehicle (New Vehicle, before first oil change Only).
N2123269402021-08-09. Service bulletin. Customer Satisfaction Program. Certain vehicles, may have a condition in which the engine oil cooler (EOC) lines may leak and detach from the crimp joints. Exposure to cold temperature may also aggravate this condition. If the EOC lines leak, there may be an oil leak on the ground and if the EOC lines detach while operating the vehicle, there will be an immediate decrease in oil pressure. This will coincide with a warning on the driver information center display (?Oil Pressure Low Turn Vehicle Off?), along with warning chimes. If the customer continues to operate the vehicle, a loss of propulsion is possible. Dealers are to replace the engine oil cooler lines, oil, oil filter and refill the coolant.
010601011L2021-03-01. Service bulletin. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
PIP57622021-01-25. Service bulletin. This preliminary information communicates to technicians a possible valve cover causing oil consusmption and the repair.
17NA4082020-11-30. Service bulletin. This service bulletin informs the technician that if the vehicle has an engine misfire with DTC P0300 set, and supercharger?s cooling system has been previously repaired, it must be properly evacuated and filled.