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Service bulletin 20NA150

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 id10178982
Published by NHTSA2020-08-31
Manufacturer's number20NA150
Manufacturer's date2020-07-27
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This technical bulletin provides repair information to correct a customer concern of Glow Plug Control Module Update for P133x and/or P067x.

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

Electrical system

Vehicles listed
CHEVROLET 35002019
CHEVROLET 35002020
CHEVROLET 4500HD2019, 2020
CHEVROLET 5500HD2019, 2020

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
20-NA-0512025-06-25. Service bulletin. This informational bulletin provides information on the Low Cab Forward trucks and the Alpine Radio Exchange Program.
13-08-116-001K2025-04-25. Service bulletin. The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
15-06-03-001F2025-04-15. Service bulletin. This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
17-NA-0502025-02-28. Service bulletin. This service bulletin explains how a health report is required when doing repairs on MD LCF vehicles.
23-NA-0642025-02-12. Service bulletin. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
21-NA-0432025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
20-NA-1322025-01-18. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
23-NA-0642025-01-03. Service bulletin. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
22-NA-2382024-12-19. Service bulletin. This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative.
PIT5962B2024-12-12. Service bulletin. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.