WenmarOpen by Wenmar Pro

Service bulletin 18NA020

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 id10212602
Published by NHTSA2022-05-31
Manufacturer's number18NA020
Manufacturer's date2022-01-28
NHTSA componentEXTERIOR LIGHTING

NHTSA's summary

This technical bulletin provides a procedure to replace the charge air cooler due to moisture getting inside of it and causing a malfunction indicator lamp illuminated with DTC P0300 and/or P0299/P2227.

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

Lighting

Trouble codes named

P0299, P0300, P2227

Vehicles listed
CHEVROLET EQUINOX2018, 2019, 2020, 2021, 2022
GMC TERRAIN2018, 2019, 2020, 2021
GMC TERRAIN NA2022 (the catalog's model; the bulletin names a series or trim of it)

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
01-08-42-001Q2025-02-11. Service bulletin. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
22-NA-2442024-05-30. Warranty extension. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
02-08-42-001J2024-01-19. Service bulletin. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
21-NA-1352023-11-29. Service bulletin. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
22-NA-1702023-10-10. Service bulletin. This bulletin offers Information on Possible Crank No Start or Extended Crank with DTC P12A6 or Service Safety Restraints message on DIC, with B0073.
22-NA-0532023-07-14. Service bulletin. This service bulletin provides information for dealers/technicians on New Labor Operations for Limited Production Option (LPO) Calibrated Accessories.
01-08-42-001P2023-05-09. Service bulletin. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
01-08-42-001O2023-02-28. Service bulletin. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
22-NA-1702022-10-07. Service bulletin. This bulletin offers Information on Possible Crank No Start or Extended Crank with DTC P12A6 or Service Safety Restraints message on DIC, with B0073.
22NA0022022-06-21. Service bulletin. This informational bulletin provides a Malfunction Indicator Lamp illuminated or a reduced power complaint.