# Service bulletin CB23\-J\-001B

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: 10237147
- Published by NHTSA: 2023\-06\-01
- Manufacturer's number: CB23\-J\-001B
- Manufacturer's date: 2023\-05\-11
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

CONDITION General Motors LLC, the manufacturer of the engine in your vehicle, has determined that certain 2020\-2023MY N\-Series vehicles produced from 8/26/2020 through 7/31/2022 and equipped with 6.6L \(L8T\) gasoline engines may experience water intrusion into the Mass Air Flow \(MAF\) sensor connector. If water intrudes into this connection, you may experience engine performance issues as well as setting the Check Engine Malfunction Indicator Lamp \(MIL\). CORRECTION Dealers will replace the MAF sensor and apply additional sealing tape to the MAF connection for waterproof protection on affected vehicles. This service will be provided free of charge.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237147-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237147-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2020 to 2023 ISUZU N\-SERIES

JSON: [/v1/bulletins/10237147](/v1/bulletins/10237147)

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