# Service bulletin 23\-NA\-071

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: 10247529
- Published by NHTSA: 2023\-12\-19
- Manufacturer's number: 23\-NA\-071
- Manufacturer's date: 2023\-12\-14
- NHTSA component: EQUIPMENT; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\)

## NHTSA's summary

This service bulletin provides repair information for an Engine Control Module Service Update to correct a customer concern of a MIL Illuminated in DIC with DTCs Set.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10247529-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10247529-9999.pdf)

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

## Components

Electrical system, Engine, Equipment and accessories, Engine control module

## Vehicles listed

- 2023 CHEVROLET SILVERADO 1500
- 2023 GMC SIERRA 1500

## Other bulletins for the same vehicles and component

- [PIT5687A](/bulletins/10249954.md), 2024-02-12, Service bulletin: UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. This Preliminary information communicates some diagnostic tips to inspect for no/low voltage at the ECM for a customers complaints of a SES MIL, Crank No Start, stalling DTC's: P16A7 and/or P16AF.
- [PIP5871](/bulletins/10224282.md), 2022-10-17, Service bulletin: UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. This Preliminary information communicates that there is an update calibration for the ecm concerning a P11D5 setting on 2023 Chevrolet and GMC trucks equipped with the L5P engine.

JSON: [/v1/bulletins/10247529](/v1/bulletins/10247529)

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