# Service bulletin 18239

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: 10145170
- Published by NHTSA: 2018\-10\-09
- Manufacturer's number: 18239
- Manufacturer's date: 2018\-08\-07
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

## NHTSA's summary

18239 \- Emissions Recall \- General Motors has decided to conduct a Voluntary Emission Recall involving certain 2018 model year vehicles, equipped with 4\-cylinder engines \(RPO LHN, LEX, L3A, LYX, LKN, LE2, LCV or LTG\). On some vehicles, an electrical connection in the circuit board may fail in the engine control module. If this occurs, a malfunction indicator lamp \(MIL\), such as the Check Engine Light may illuminate. Replace the Engine Control Module \(ECM\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10145170-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10145170-0001.pdf)

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

## Components

Engine, Exhaust and emissions

## Vehicles listed

- 2018 BUICK LACROSSE
- 2018 CADILLAC ATS
- 2018 CADILLAC CT6 PLUG\-IN HYBRID
- 2018 CADILLAC CTS
- 2018 CHEVROLET CAMARO
- 2018 CHEVROLET COLORADO
- 2018 CHEVROLET CRUZE
- 2018 CHEVROLET EQUINOX
- 2018 CHEVROLET MALIBU
- 2018 CHEVROLET VOLT
- 2018 GMC ACADIA
- 2018 GMC CANYON
- 2018 GMC TERRAIN

## Recalls for the same vehicles and component

- [2019449](/recalls/tc/2019449.md), 2019-09-06: Engine
- [19V642000](/recalls/nhtsa/19V642000.md), 2019-09-06: ENGINE; ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS

## Other bulletins for the same vehicles and component

- [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.
- [22\-NA\-007](/bulletins/11025552.md), 2025-11-15, Service bulletin: ENGINE; ELECTRICAL SYSTEM. This service bulletin provides procedures to correct customer concerns of Poor Engine Performance in Extremely Cold Weather Conditions, Charge Air Cooler \(CAC\) Icing \- Malfunction Indicator Lamp \(MIL\) Illuminated with DTCs P0299, P0234, P0236, P2227, P00C7 Set.
- [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.
- [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\-100](/bulletins/11019503.md), 2025-06-12, Service bulletin: ENGINE. This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California Emission State may be entitled to the 7 year, 70,000\-mile Emission Select State Component Limited Warranty.
- [18\-NA\-069](/bulletins/11017876.md), 2025-05-06, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM; ENGINE. This service bulletin provides a service procedure to correct conditions of Poor Engine Performance in Extremely cold weather conditions, CAC Icing, MIL Illuminated with DTCs set.
- [21\-NA\-139](/bulletins/11017443.md), 2025-05-01, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp \(MIL\) Illuminated \- DTC P3055 Set.
- [25\-NA\-052](/bulletins/11017263.md), 2025-04-28, Service bulletin: ENGINE. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
- [25\-NA\-052](/bulletins/11016942.md), 2025-04-10, Service bulletin: ENGINE. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.

JSON: [/v1/bulletins/10145170](/v1/bulletins/10145170)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2018239&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10145170&vehicle=Service%20bulletin%2018239)