Service bulletin N212345540

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)
Type	Service bulletin
NHTSA id	10207741
Published by NHTSA	2022-02-07
Manufacturer's number	N212345540
Manufacturer's date	2021-10-05
NHTSA component	ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM

NHTSA's summary

Emission Recall. General Motors has decided to conduct a voluntary emission recall involving certain vehicles, equipped with a 2.0L engine. The Engine Control Module (ECM) in these vehicles may not respond to test tools with the correct Calibration Verification Number (CVN). If not corrected, this could result in a failure of an emissions Inspection and Maintenance (I/M) test or prevent a service technician from confirming that the appropriate program data is in the ECM. Dealers are to reprogram the Engine Control Module (ECM) with corrected software.

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, Engine control module

Vehicles listed
CHEVROLET EQUINOX	2018
CHEVROLET TRAVERSE	2018

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
PIP5628F	2023-05-15. Service bulletin. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
1823901	2022-02-14. Service bulletin. Emissions Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with 4-cylinder engines (RPO LHN, LEX, L3A, LYX, LKN, LE2, LCV or LTG). On some vehicles, an electrical connection in the circuit board may fail in the engine control module. If this occurs, a malfunction indicator lamp (MIL), such as the Check Engine Light may illuminate. Replace the Engine Control Module (ECM).
18239 01	2022-02-07. Service bulletin. Emissions Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with 4-cylinder engines (RPO LHN, LEX, L3A, LYX, LKN, LE2, LCV or LTG). On some vehicles, an electrical connection in the circuit board may fail in the engine control module. If this occurs, a malfunction indicator lamp (MIL), such as the Check Engine Light may illuminate. Replace the Engine Control Module (ECM).
21NA139	2021-08-09. Service bulletin. This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
17337	2021-04-29. Service bulletin. General Motors has decided to conduct a Voluntary Emission Recall involving certain 2016 model year Chevrolet Colorado, GMC Canyon; 2017 model year Chevrolet Express, GMC Savana; 2017-2018 model year Chevrolet Colorado, Cruze, Silverado HD, GMC Canyon, Sierra HD and 2018 model year Chevrolet Equinox, GMC Terrain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor. Additionally, a subset of these vehicles, certain 2017 model year Chevrolet Silverado HD and GM Sierra HD vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle braking. Correction Program the engine control module, and transmission control module when applicable.
17-NA-317	2021-04-15. Service bulletin. Transmission Shudder, Low Idle, Stalling after Auto Start , Reduced Engine Power Displayed on Driver Information Center (DIC), Malfunction Indicator Lamp (MIL) Illuminated - DTCs P034B, P0506, P0011, P0014, P0021 and/or P0024 Set Some customers may comment on the following conditions: • MIL is illuminated • Transmission shudder • Low idle • Stall after auto start • Reduced Engine Power displayed on DIC The technician may find one or more of the following DTCs set: • P034B • P0506 • P0011 • P0014 • P0021 • P0024 Cause This condition may be caused by the Crankshaft Position Sensor (CPS) circuit picking up EMI interference from unrelated control circuit in the same harness. Correction Replace the crank sensor portion of engine harness with a twisted pair jumper harness between the crank sensor and ECM connector.