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Service bulletin 19NA181

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 id10212557
Published by NHTSA2022-05-31
Manufacturer's number19NA181
Manufacturer's date2021-12-08
NHTSA componentENGINE; ELECTRICAL SYSTEM:WIRING

NHTSA's summary

This technical bulletin provides a procedure to locate and repair the engine wiring harness.

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, Engine, Wiring and fuses

Vehicles listed
CHEVROLET EQUINOX2018, 2019, 2020
GMC TERRAIN2018, 2019, 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
21NA0132022-05-31. Service bulletin. This technical bulletin provides repair information to correct a customer concern of a rattle or ticking noise heard coming from B-Pillar area.
PIT57482020-08-10. Service bulletin. This preliminary information makes the technician aware of a trailer lighting concern if the incorrect harness is used to wire trailer.
100089005G2019-05-13. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
100089005H2019-03-18. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
18NA0922018-05-21. Service bulletin. This technical bulletin provides a procedure to repair a bad terminal and re-route the harness to prevent the future event of Radio Audio Randomly Cuts Out DTC U18B4 - Lost Communication with Radio on Ethernet Bus from happening again.
PIP55632018-05-21. Service bulletin. This Preliminary information communicates of possible chafed wire in the engine harness that is routedon top of the trans assembly.
PIT55772017-08-15. Service bulletin. This Preliminary information communicates a potential wiring harness issue behind the rear seat that may cause and SIR MIL , Rear Drive issue or an open fuse.