# Service bulletin PIP3119P

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: 10156912
- Published by NHTSA: 2019\-04\-08
- Manufacturer's number: PIP3119P
- Manufacturer's date: 2019\-03\-06
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; ENGINE

## NHTSA's summary

This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician may find Diagnostic Trouble Codes P0420 and or P0430 stored. Technician should be advised that the catalytic converter efficiency Diagnostic Trouble Codes P0420 and P0430 are disabled for the first hour of engine run time to allow break\-in of the catalytic converter. Technician will need to use a Tech2 to check the verify engine run time on the Engine Hour Meter in the Instrument Panel Cluster Data Display/Data 1 List in the scan tool match. If the engine run time is less than one hour, the battery may have been disconnected, or another vehicle power loss event may have occurred, during vehicle manufacturing. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle. If the catalytic converter was replaced and the Diagnostic Trouble Codes set it may be a result of the engine run time restrictions no longer being in place since the vehicle is no longer new. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10156912-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10156912-9999.pdf)

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

## Components

Engine, Exhaust and emissions, Catalytic converter

## Trouble codes named

P0420, P0430

## Vehicles listed

- 2002 to 2018 CADILLAC ESCALADE
- 2007 to 2013 CHEVROLET AVALANCHE
- 2002 to 2006 CHEVROLET AVALANCHE 1500
- 2002 to 2018 CHEVROLET EXPRESS
- 2017 CHEVROLET SILVERADO
- 2002 to 2011 CHEVROLET SILVERADO 1500
- 2014 CHEVROLET SILVERADO 1500
- 2012 CHEVROLET SILVERADO 2500
- 2015 to 2016 CHEVROLET SILVERADO 2500
- 2018 CHEVROLET SILVERADO 2500
- 2013 CHEVROLET SILVERADO 3500
- 2002 to 2018 CHEVROLET SUBURBAN
- 2002 to 2018 CHEVROLET TAHOE
- 2002 to 2018 GMC SAVANA
- 2017 GMC SIERRA
- 2006 to 2010 GMC SIERRA 1500
- 2014 to 2016 GMC SIERRA 1500
- 2003 to 2005 GMC SIERRA 2500
- 2012 GMC SIERRA 2500
- 2002 GMC SIERRA 3500
- 2011 GMC SIERRA 3500
- 2013 GMC SIERRA 3500
- 2018 GMC SIERRA 3500
- 2002 to 2013 GMC YUKON DENALI
- 2015 to 2018 GMC YUKON DENALI
- 2014 GMC YUKON XL

## Other bulletins for the same vehicles and component

- [14096A](/bulletins/10247303.md), 2023-12-18, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; BACK OVER PREVENTION. Oxygen Sensor Fracture
- [14096](/bulletins/10247302.md), 2023-12-18, Service bulletin: BACK OVER PREVENTION; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. Oxygen Sensor Fracture
- [N202304540](/bulletins/10177356.md), 2020-07-20, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; EQUIPMENT:ELECTRICAL. Emissions Recall. General Motors has decided to conduct a voluntary emissions recall involving certain vehicles. The engine control module \(ECM\) in these vehicles may not be able to properly diagnose reduced efficiency issues within the catalytic converter. If the catalytic converter?s efficiency would become reduced, tailpipe emissions could exceed acceptable standards without illuminating the Malfunction Indicator Lamp \(Check Engine Light\). Dealers are to reprogram the ECM.
- [060601010D](/bulletins/10139279.md), 2018-06-04, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This informational bulletin explains how the catalytic converters may need an inspection, cleaning or replacement if debris have entered the exhaust system.
- [PIP5232A](/bulletins/10135342.md), 2018-05-07, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid\-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
- [PIP5232](/bulletins/10135322.md), 2018-05-07, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid\-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
- [PIP5232B](/bulletins/10115143.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid\-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
- [PIP5228B](/bulletins/10115000.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about vehicles that have a vibration that is felt between 1200 ? 1400 engine revolutions per minute when in active fuel management V4 mode. Technician will need to use J?38792\-A Electronic Vibration Analyzer 2 or CH?51450\-NVH Pico Oscilloscope Diagnostic Kit to measure the frequency of the vibration. Technician will need to remove and replace the exhaust muffler clamp that joins the three\-way catalytic converter assembly to the pipe of the muffler assembly. After the exhaust is reinstalled remove and reinstall each cab mounts and retest.
- [PIP5232C](/bulletins/10113914.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid\-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the coil grounds ring terminal at the engine block for the bank with the concern and repair the wire.
- [PIP3119N](/bulletins/10113325.md), 2017-08-15, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; POWER TRAIN. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician may find Diagnostic Trouble Codes P0420 and or P0430 stored. Technician should be advised that the catalytic converter efficiency Diagnostic Trouble Codes P0420 and P0430 are disabled for the first hour of engine run time to allow break\-in of the catalytic converter. Technician will need to use a Tech2 to check the verify engine run time on the Engine Hour Meter in the Instrument Panel Cluster Data Display/Data 1 List in the scan tool match. If the engine run time is less than one hour, the battery may have been disconnected, or another vehicle power loss event may have occurred, during vehicle manufacturing. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle. If the catalytic converter was replaced and the Diagnostic Trouble Codes set it may be a result of the engine run time restrictions no longer being in place since the vehicle is no longer new. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle.

JSON: [/v1/bulletins/10156912](/v1/bulletins/10156912)

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