# Service bulletin 21\-NA\-186

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: 10251352
- Published by NHTSA: 2024\-03\-06
- Manufacturer's number: 21\-NA\-186
- Manufacturer's date: 2024\-02\-27
- NHTSA component: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

## NHTSA's summary

This service bulletin provides repair information to correct a customer concern of Service Engine Soon Illuminated in DIC and/or a Malfunctioning Fuel Gauge with DTC U0076/U18A2/P1001/P1434 or Other Message Counter Incorrect Codes Set.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10251352-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10251352-9999.pdf)

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

## Components

Electrical system, Engine, Fuel system, Fuel tank

## Trouble codes named

P1001, P1434, U0076, U18A2

## Vehicles listed

- 2020 to 2024 CHEVROLET MALIBU

## Other bulletins for the same vehicles and component

- [05\-06\-04\-022U](/bulletins/10234164.md), 2023-04-14, Service bulletin: FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.

JSON: [/v1/bulletins/10251352](/v1/bulletins/10251352)

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