# Service bulletin 18NA246

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: 10158772
- Published by NHTSA: 2019\-04\-22
- Manufacturer's number: 18NA246
- Manufacturer's date: 2019\-02\-14
- NHTSA component: ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\)

## NHTSA's summary

This technical bulletin provides a procedure to change the oil if excessive fuel has been found in the oil and the cause of the DTC set. Also replacing the PCV valve in camshaft cover and updating the ECM with latest software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10158772-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10158772-9999.pdf)

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

## Components

Engine, Exhaust and emissions, Crankcase ventilation \(PCV\)

## Vehicles listed

- 2016 to 2019 BUICK ENVISION
- 2014 to 2019 BUICK REGAL
- 2013 to 2019 CADILLAC ATS
- 2016 CADILLAC CT6
- 2017 to 2018 CADILLAC CT6 PLUG\-IN HYBRID
- 2014 to 2019 CADILLAC CTS
- 2016 to 2019 CHEVROLET CAMARO
- 2018 to 2019 CHEVROLET EQUINOX
- 2013 to 2019 CHEVROLET MALIBU
- 2018 to 2019 CHEVROLET TRAVERSE
- 2017 to 2019 GMC TERRAIN

## Other bulletins for the same vehicles and component

- [PIP5503B](/bulletins/10171264.md), 2020-02-10, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This Preliminary information communicates to the dealer additional information on checking for the engne crankcase being overfull on oil causing an engine vibration concern. The technician is advised to inspect for contaminnants and adjust the engine oil level as needed.
- [18NA246](/bulletins/10161941.md), 2019-07-01, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This technical bulletin provides a procedure to change the oil if excessive fuel has been found in the oil and the cause of the DTC set. Also replacing the PCV valve in camshaft cover and updating the ECM with latest software.
- [19NA080](/bulletins/10160421.md), 2019-05-28, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This informational bulletin provides information to the tech to discard the PCV drain tube when working on the lower area of the engine.
- [18NA246](/bulletins/10156896.md), 2019-04-08, Service bulletin: FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\); ENGINE. This technical bulletin provides a procedure to change the oil if excessive fuel has been found in the oil and the cause of the DTC set. Also replacing the PCV valve in camshaft cover and updating the ECM with latest software.
- [PIP5598](/bulletins/10147358.md), 2018-11-13, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This Preliminary information communicates the possibility of a crank no start or extended crank condition due to exhaust cam reluctor being out of position.
- [PIP5421F](/bulletins/10147350.md), 2018-11-13, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This Preliminary Information communication provides information to the technician about vehicles that may be running rough with a Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Code P0300 set. Technician will need to perform an Engine Compression Testing in Service Information. If excessive leakage to the crankcase is isolated, check piston and cylinder wall condition. Technician should perform the repair per the level of damage. If the cylinder wall surface has not been compromised, only piston replacement is required.
- [PIP3423P](/bulletins/10144453.md), 2018-09-17, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This Preliminary Information communication provides information to the technician that Diagnostic Trouble Codes P0016, P0017, P0018, P0019, P0008 or P0009 may be set. Technician will need to inspect for loose timing chains or tensioners. If after following Service Information diagnostics the root cause is not found inspect the reluctor for the crankshaft sensor. If the reluctor has moved then replace crankshaft.
- [PIP5421D](/bulletins/10137728.md), 2018-05-21, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This Preliminary Information communication provides information to the technician about vehicles that may be running rough with a Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Code P0300 set. Technician will need to perform an Engine Compression Testing in Service Information. If excessive leakage to the crankcase is isolated, check piston and cylinder wall condition. Technician should perform the repair per the level of damage. If the cylinder wall surface has not been compromised, only piston replacement is required.
- [PIP5503](/bulletins/10118273.md), 2017-10-04, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This Preliminary information communicates to the dealer additional information on checking for the engne crankcase being overfull on oil causing an engine vibration concern. The technician is advised to inspect for contaminnants and adjust the engine oil level as needed.
- [PIP5421B](/bulletins/10113480.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\); ENGINE AND ENGINE COOLING; EQUIPMENT:MECHANICAL. This Preliminary Information communication provides information to the technician about vehicles that may be running rough with a Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Code P0300 set. Technician will need to perform an Engine Compression Testing in Service Information. If excessive leakage to the crankcase is isolated, check piston and cylinder wall condition. Technician should perform the repair per the level of damage. If the cylinder wall surface has not been compromised, only piston replacement is required.

JSON: [/v1/bulletins/10158772](/v1/bulletins/10158772)

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