Service bulletin 030601023D

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)
Type	Service bulletin
NHTSA id	10176645
Published by NHTSA	2020-06-22
Manufacturer's number	030601023D
Manufacturer's date	2020-05-28
NHTSA component	ENGINE

NHTSA's summary

This information bulletin explains how to measure for oil consumption and possible reasons for loss of oil.

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

Vehicles listed
CHEVROLET AVALANCHE	2007, 2008, 2009, 2010, 2011, 2012, 2013
CHEVROLET AVALANCHE 1500	2002, 2003, 2004, 2005, 2006 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET AVALANCHE 2500	2002, 2003, 2004, 2005, 2006 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET C SERIES	2003 to 2009
CHEVROLET CONVENTIONAL	2003
CHEVROLET EXPRESS	2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET SILVERADO 1500	2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 1500	2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 1500 HD	2002, 2003, 2004, 2005 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 2500	2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 3500	2000, 2001 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN	2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET T SERIES	2010
GMC C SERIES	2004 to 2006
GMC G SERIES	2000
GMC G SERIES	2003
GMC GM	2001 to 2002
GMC SAVANA	2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
GMC SIERRA 2500	2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI	2007, 2008, 2009, 2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI	2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC TOPKICK	2003 to 2009
GMC YUKON DENALI XL	2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL	2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
GMC YUKON XL	2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL	2015, 2016, 2017, 2018, 2019
HUMMER H2	2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

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

Recalls for the same vehicles and component
21V346000	2021-05-13. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
19V328000	2019-04-25. ENGINE
2014577	2014-12-18. Engine
2014005	2014-01-13. Engine
14V007000	2014-01-13. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
2007363	2007-11-09. Engine
07V521000	2007-11-07. ENGINE AND ENGINE COOLING
06V289000	2006-08-03. ENGINE AND ENGINE COOLING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
N262576260	2026-10-15. Service campaign. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition that could cause a small exhaust leak at the catalytic converter inlet. Dealers are to replace the catalytic converter inlet clamp and to inspect the catalytic converter – replacing it if damage is observed. The repairs will be made at no charge to the customer.
N262548050	2026-04-24. Service bulletin. This message is to inform dealers that Special Coverage N262548050 is being temporarily suspended for the models above. Involved vehicles will be temporarily removed from IVH. Dealers will be notified when repairs can be resumed. We apologize for any inconvenience this situation may cause.
N262548050	2026-04-23. Service campaign. Certain vehicles, may have a condition that could cause the Catalytic Converter to fail. If this failure occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate, and a diagnostic trouble code will set. Dealers are to replace the Catalytic Converter as necessary. The repairs will be made at no charge to the customer.
00-06-01-026R	2025-12-03. Service bulletin. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
23-NA-170	2025-10-25. Service bulletin. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
23-NA-153	2025-10-25. Service bulletin. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
24-NA-241	2025-10-16. Service bulletin. This informational bulletin advises the technician of a part number change for long block engines used in the trucks noted.
22-NA-080	2025-10-16. Service bulletin. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
15-NA-010	2025-07-07. Service bulletin. This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
25-NA-037	2025-06-26. Service bulletin. This bulletin advises the tech that the Exhaust Roller Follower may be the issue with the engine Ticking noise, misfire or rough run and what to replace if found the cause.