# Service bulletin 16NA380

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: 10178252
- Published by NHTSA: 2020\-08\-10
- Manufacturer's number: 16NA380
- Manufacturer's date: 2020\-06\-08
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

## NHTSA's summary

This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178252-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178252-9999.pdf)

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

## Components

Engine, Exhaust and emissions, Exhaust manifold, pipes and muffler

## Vehicles listed

- 2011 to 2012 CHEVROLET COLORADO
- 2014 CHEVROLET COLORADO
- 2015 to 2020 CHEVROLET COLORADO
- 2011 to 2019 CHEVROLET CRUZE
- 2018 to 2020 CHEVROLET EQUINOX
- 2010 to 2020 CHEVROLET EXPRESS
- 2010 to 2014 CHEVROLET SILVERADO 1500
- 2017 to 2020 CHEVROLET SILVERADO 1500
- 2010 to 2020 CHEVROLET SILVERADO 2500
- 2019 to 2020 CHEVROLET SILVERADO 4500
- 2011 to 2012 GMC CANYON
- 2015 to 2020 GMC CANYON
- 2010 to 2020 GMC SAVANA
- 2014 GMC SIERRA 1500
- 2019 to 2020 GMC SIERRA 1500
- 2011 to 2020 GMC SIERRA 2500
- 2011 to 2013 GMC SIERRA DENALI
- 2015 to 2019 GMC SIERRA DENALI
- 2018 to 2020 GMC TERRAIN

## Other bulletins for the same vehicles and component

- [21NA095](/bulletins/10214206.md), 2022-06-21, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This technical bulletin provides a procedure to seal the exhaust at the UFSCR and Tailpipe flange.
- [PIT5819](/bulletins/10190361.md), 2021-04-19, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This Preliminary information communicates in temperatures below freezing, it may be noticed that exhaust is only exiting from the right hand exhaust tailpipe. The cause of this condition is a low point in left side tailpipe which results in condensation building up at the low point in the tailpipe. In low temperatures the condensation can freeze and form ice limiting the flow of exhaust out of the left tailpipe. Dealers are to drill a small hole in the left tailpipe to allow condensation to drain.
- [16NA380](/bulletins/10183132.md), 2020-11-30, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
- [16NA380](/bulletins/10165080.md), 2019-09-23, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
- [16NA380](/bulletins/10161931.md), 2019-07-01, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
- [PIP5197J](/bulletins/10149063.md), 2018-11-26, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that have excessive oil consumption, blue smoke from the exhaust, or a Malfunction Indicator Lamp. Technician should inspect the PVC orifice for leaking oil or drawing a vacuum at idle. If the PCV orifice external port is leaking oil or vacuum, replace the camshaft cover assembly. Technician will inspect for a missing intake manifold Non Return Valve that may have damaged the PCV orifice diaphragm. Check for the return valve if it is not visible use a long cotton swab to wipe any excess oil from the valve to validate. If the non return valve is still not visible, then intake manifold removal for inspection is required to validate. When the valve is present reinstall the intake manifold. When the valve is not present replace the intake manifold assembly.
- [PIT5636](/bulletins/10147375.md), 2018-11-13, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This Preliminary information communicates an issues with a SES MIL and DTC P1005. GM Engineering is working to root cause this issue.
- [18236](/bulletins/10147335.md), 2018-11-13, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. 18236 \- Special Coverage \- On some vehicles, equipped with the LML \(DURAMAX 6.6L V8 TURBO Diesel\) engine, the exhaust turbocharger outlet pipe may have a bad weld. Smoke may be noticed from under the hood at a stop or while driving. The customer may also smell exhaust gas. Dealers are to replace the exhaust turbocharger outlet pipe. The repairs will be made at no charge to the customer.
- [PI1275](/bulletins/10140360.md), 2018-06-11, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This preliminary information bulletin provides a procedure to install an air temperature sensor package kit, to correct the customer concern for reduced engine power and /or MIL illuminated.
- [16\-NA\-380](/bulletins/10137988.md), 2018-05-21, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This Technical bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.

JSON: [/v1/bulletins/10178252](/v1/bulletins/10178252)

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