# Service bulletin 16\-NA\-212

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: 10089001
- Published by NHTSA: 2017\-01\-18
- Manufacturer's number: 16\-NA\-212
- Manufacturer's date: 2016\-06\-28
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\); EQUIPMENT

## NHTSA's summary

THIS INFORMATION BULLETIN PROVIDE INFORMATION ON A NEW WAY TO LOOK AT NOX SENSOR READINGS AND EXHAUST TEMPERATURE DURING A DPF REGENERATION OR A REDUCTANT FLUID QUALITY TEST.

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine, Equipment and accessories, Exhaust and emissions, EGR valve

## Vehicles listed

- 2014 to 2016 CHEVROLET EXPRESS
- 2016 CHEVROLET EXPRESS 4500
- 2014 to 2016 CHEVROLET SILVERADO 1500
- 2015 CHEVROLET SILVERADO 2500
- 2015 CHEVROLET SILVERADO 3500
- 2014 to 2016 GMC SAVANA
- 2014 GMC SAVANA 1500
- 2016 GMC SAVANA 1500
- 2014 to 2016 GMC SAVANA 2500
- 2014 to 2015 GMC SAVANA 3500
- 2014 GMC SIERRA 1500
- 2015 to 2016 GMC SIERRA 2500
- 2015 to 2016 GMC SIERRA HD

## Other bulletins for the same vehicles and component

- [08\-06\-04\-003D](/bulletins/10190379.md), 2021-04-20, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\); EQUIPMENT. New Tool Availability — EN\-48974 – EGR Cooler Pressure Tester Adapter Set to Diagnose Duramax® Diesel Engine EGR Cooler Engine Coolant Leaks into Combustion Chamber
- [N192210260](/bulletins/10169652.md), 2019-12-30, Service bulletin: FUEL SYSTEM, DIESEL; EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). N192210260 \- Special Coverage Adjustment \- Certain vehicles that are equipped with a diesel engine \(LML/LGH\) may have a condition which causes an offset in the temperature sensor in the diesel\-emission\-reduction fluid \(DEF\) tank reservoir or causes the DEF heater performance to degrade. If this condition occurs, the Malfunction Indicator Light \(Check Engine Light\) will illuminate, the ?Service Exhaust Fluid System? or ?Service Emission System? message will be displayed, and a diagnostic trouble code related to the condition will be set. Dealers are to replace the DEF tank reservoir as necessary. The repairs will be made at no charge to the customer.
- [18287](/bulletins/10150564.md), 2018-12-10, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). 18287 \- Special Coverage. On certain vehicles equipped with a 6.6L Duramax diesel engine \(RPO LGH\), the malfunction\-indicator light \(MIL\) may illuminate due to soot build\-up in the Exhaust Gas Recirculation \(EGR\) cooler. This special coverage covers the condition described above for a period of 10 years or 120,000 miles \(193,000 km\), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Dealers are to replace the EGR cooler.
- [08\-06\-04\-003C](/bulletins/10138703.md), 2018-05-29, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). This informational bulletin advises of a new testing tool for EGR cooling pressure tester.
- [17\-NA\-161](/bulletins/10137657.md), 2018-05-21, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). This technical bulletin provides a procedure for exhaust gas recirculation valve pipe replacement \(EGR Bypass Pipe\) due to the EGR cooler bypass pipe being crack.
- [PIP5198A](/bulletins/10112162.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\); ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:WIRING. This Preliminary Information communication provides information to the technician about vehicles that may have Service messages in the Driver Information Center, Malfunction Indicator Lamp on, Erratic fluctuating engine oil pressure gauge, engine crank no start, and engine may run rough or misfire. Technician may find Diagnostic Trouble Codes. Technician should use published Service Information diagnostics for the Diagnostic Trouble Codes that are set. If the diagnosis does not lead to a resolution check for chafing of the engine wiring harness that is routed near the Exhaust Gas Recirculation Valve. Technician should repair any damaged wiring and fully seat the wire retaining harness. Also the technician should bend the Exhaust Gas Recirculation Valve gasket over to prevent a re\-occurrence.
- [PIP5168C](/bulletins/10111805.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\); ENGINE. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a no crank concern. Technician will need to check the valve train for movement when the engine is cranked. If the valve train is not moving while the crankshaft is moving the front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the valve train is rotating during inspection, disconnect the Camshaft Position sensor and check if the engine will start. If the engine starts front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the engine does not start with the Camshaft Position sensor disconnected the follow published ?Engine Cranks But Does Not Run? diagnosis in Service Information. Also perform an Engine Compression Test and Cylinder Leakage Test in Service Information documents all results. If the Service Information procedures above isolate an engine mechanical concern then removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly.
- [PB\-15766](/bulletins/10074771.md), 2016-06-22, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). SUMMARY TO BE PROVIDED ON A FUTURE DATE.
- [SB\-080604003\-C](/bulletins/10056354.md), 2014-11-08, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). GMC/CHEVROLET: ENGINES, WITH EGR SYSTEM, HAS LEAKAGE FROM EGR COOLER ENGINE COOLANT INTO THE COMBUSTION CHAMBER. MODEL 2002\-15 SILVERADO, SIERRA, 2004\-09 KODIAK C4500\-C5500, TOPKICK C4500\-C5500, 2006\-15 EXPRESS, SAVANA. \*PE

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