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Service bulletin 18NA150

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 id10212608
Published by NHTSA2022-05-31
Manufacturer's number18NA150
Manufacturer's date2022-01-07
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION

NHTSA's summary

This informational bulletin provides information on 6.6L Duramax Possible Oil Leak Path Information.

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
CHEVROLET 35002022
CHEVROLET 45002022
CHEVROLET 4500HD2022
CHEVROLET 4500XD2022
CHEVROLET 5500HD2022
CHEVROLET 5500XD2022
CHEVROLET 6500HD2022
CHEVROLET 6500XD2022
CHEVROLET 7500XD2022
CHEVROLET BLAZER2022
CHEVROLET BOLT EUV2022
CHEVROLET BOLT EV2022
CHEVROLET CAMARO2022
CHEVROLET COLORADO2022
CHEVROLET CORVETTE2022
CHEVROLET EQUINOX2022
CHEVROLET MALIBU2022
CHEVROLET SILVERADO 15002017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 65002022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SPARK2022
CHEVROLET SUBURBAN2022
CHEVROLET SUBURBAN 15002022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2022
CHEVROLET TRAILBLAZER2022
CHEVROLET TRAVERSE2022
CHEVROLET TRAX2022
GMC ACADIA2022
GMC BRIGHTDROP EV6002022
GMC CANYON2022
GMC HUMMER EV PICKUP2022
GMC SAVANA2022
GMC SIERRA 15002019 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2022
GMC TERRAIN NA2022 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2022
GMC YUKON XL2022

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
PIP59382023-09-18. Service bulletin. 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.
22-NA-2322023-07-11. Service bulletin. This informational bulletin advises the technician of a possibly noise coming from the transmission oil pump.
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.
17NA1142022-05-31. Service bulletin. This technical bulletin provides a procedure to Tighten the Charge Air Cooler Duct Clamp to correct a condition of an oil leak originating from either the inlet or outlet duct of the turbocharger due to the charge air cooler pipe clamp not being tightened properly.
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.
16NA2062022-05-31. Service bulletin. This service bulletin provides service information on a New Way to Look at NOx Sensor Readings and Exhaust Temperature During a DPF Regeneration or a Reductant System Malfunction Warning Service Bay Test.
PIT5668D2022-02-14. Service bulletin. This preliminary information is to clarify a normal fluctuation of the temperature gauge.
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).