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Service bulletin 17NA050

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10212548
Published by NHTSA2022-05-31
Manufacturer's number17NA050
Manufacturer's date2021-12-23
NHTSA componentPOWER TRAIN:MANUAL TRANSMISSION:INTERNAL:SHAFT:INTERMEDIATE/LAY; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); FUEL SYSTEM, DIESEL

NHTSA's summary

This informational bulletin explains how a health report is required when doing repairs on LCF vehicles.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Fuel system, Transmission and driveline, Engine control module, Manual transmission

Vehicles listed
CHEVROLET 35002016
CHEVROLET 35002017
CHEVROLET 35002021
CHEVROLET 35002022
CHEVROLET 45002022
CHEVROLET 4500HD2017, 2018, 2019, 2020, 2021, 2022
CHEVROLET 4500XD2017, 2018, 2019, 2020, 2021, 2022
CHEVROLET 5500HD2017, 2018, 2019, 2020, 2021, 2022
CHEVROLET 5500XD2018, 2019, 2020, 2021, 2022
CHEVROLET LOW CAB FORWARD 55002017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
21NA1132022-06-21. Service bulletin. This technical bulletin provides a procedure to perform a learn procedure for the turbo actuator.
20NA0902022-06-21. Service bulletin. This informational bulletin provides a way for the technician to identify if the ECM has been modified.
20NA1972022-05-31. Service bulletin. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern.
990420002L2021-08-09. Service bulletin. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
20NA1612020-12-21. Service bulletin. This informational bulletin advises the technician to check for a possible stuck oil pressure relief valve.