# 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.

- 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176645-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176645-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2007 to 2013 CHEVROLET AVALANCHE
- 2002 to 2006 CHEVROLET AVALANCHE 1500
- 2002 to 2006 CHEVROLET AVALANCHE 2500
- 2003 to 2009 CHEVROLET C SERIES
- 2003 CHEVROLET CONVENTIONAL
- 2000 to 2019 CHEVROLET EXPRESS
- 2006 to 2013 CHEVROLET SILVERADO 1500
- 2017 to 2018 CHEVROLET SILVERADO 1500
- 2002 to 2005 CHEVROLET SILVERADO 1500 HD
- 2000 to 2020 CHEVROLET SILVERADO 2500
- 2000 to 2001 CHEVROLET SILVERADO 3500
- 2000 to 2019 CHEVROLET SUBURBAN
- 2010 CHEVROLET T SERIES
- 2004 to 2006 GMC C SERIES
- 2000 GMC G SERIES
- 2003 GMC G SERIES
- 2001 to 2002 GMC GM
- 2000 to 2019 GMC SAVANA
- 2007 to 2020 GMC SIERRA 2500
- 2007 to 2013 GMC SIERRA DENALI
- 2015 to 2018 GMC SIERRA DENALI
- 2003 to 2009 GMC TOPKICK
- 2010 to 2013 GMC YUKON DENALI XL
- 2000 to 2011 GMC YUKON XL
- 2012 to 2014 GMC YUKON XL
- 2015 to 2019 GMC YUKON XL
- 2003 to 2010 HUMMER H2

## Recalls for the same vehicles and component

- [21V346000](/recalls/nhtsa/21V346000.md), 2021-05-13: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE
- [19V328000](/recalls/nhtsa/19V328000.md), 2019-04-25: ENGINE
- [2014577](/recalls/tc/2014577.md), 2014-12-18: Engine
- [2014005](/recalls/tc/2014005.md), 2014-01-13: Engine
- [14V007000](/recalls/nhtsa/14V007000.md), 2014-01-13: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
- [2007363](/recalls/tc/2007363.md), 2007-11-09: Engine
- [07V521000](/recalls/nhtsa/07V521000.md), 2007-11-07: ENGINE AND ENGINE COOLING
- [06V289000](/recalls/nhtsa/06V289000.md), 2006-08-03: ENGINE AND ENGINE COOLING

## Other bulletins for the same vehicles and component

- [N262576260](/bulletins/11038468.md), 2026-10-15, Service campaign: ENGINE. 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](/bulletins/11031551.md), 2026-04-24, Service bulletin: ENGINE. 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](/bulletins/11031510.md), 2026-04-23, Service campaign: ENGINE. 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](/bulletins/11026017.md), 2025-12-03, Service bulletin: ENGINE. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- [23\-NA\-170](/bulletins/11024486.md), 2025-10-25, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
- [23\-NA\-153](/bulletins/11024485.md), 2025-10-25, Service bulletin: ENGINE. 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](/bulletins/11024332.md), 2025-10-16, Service bulletin: ENGINE. This informational bulletin advises the technician of a part number change for long block engines used in the trucks noted.
- [22\-NA\-080](/bulletins/11024330.md), 2025-10-16, Service bulletin: ENGINE. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
- [15\-NA\-010](/bulletins/11020254.md), 2025-07-07, Service bulletin: ENGINE. 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](/bulletins/11019748.md), 2025-06-26, Service bulletin: ENGINE. 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.

JSON: [/v1/bulletins/10176645](/v1/bulletins/10176645)

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