TSB: CHEVROLET CANYON, COLORADO, CRUZE, EQUINOX, EXPRESS, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, TERRAIN (2017-2018)

Bulletin 16NA377 - September 6, 2017

Bulletin Details

Bulletin ID16NA377
ManufacturerCHEVROLET
ModelsCANYON, COLORADO, CRUZE, EQUINOX, EXPRESS, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, TERRAIN
Model Years2017-2018
Date IssuedSeptember 6, 2017
Date Added to NHTSAMay 13, 2019
ComponentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
Vehicles Affected24 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls, they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

This informational bulletin provides information on a Service Emission System Message and/or a Malfunction Indicator Lamp illuminated. This usually occurs after recently filling the DEF tank with the ignition in the on position due to some

Affected Vehicles

MakeModelYearComponent
GMC CANYON 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET COLORADO 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET CRUZE 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET EQUINOX 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET EXPRESS 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC SAVANA 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC SIERRA 1500 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC SIERRA 2500 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC SIERRA 3500 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET SILVERADO 1500 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET SILVERADO 2500 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET SILVERADO 3500 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC TERRAIN 2018 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC CANYON 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET COLORADO 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET CRUZE 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET EXPRESS 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC SAVANA 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC SIERRA 1500 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC SIERRA 2500 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
GMC SIERRA 3500 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET SILVERADO 1500 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET SILVERADO 2500 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
CHEVROLET SILVERADO 3500 2017 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

Related CHEVROLET Recalls

CampaignModelYearComponentSummary
SILVERADO 2500 2025 TIRES:PRESSURE MONITORING AND REGULAT... General Motors, LLC (GM) is recalling certain 2024-2025 Chevrolet Silverado 2...
SILVERADO 2500 2024 TIRES:PRESSURE MONITORING AND REGULAT... General Motors, LLC (GM) is recalling certain 2024-2025 Chevrolet Silverado 2...
SILVERADO EV 2026 TIRES:TEMPORARY/EMERGENCY SPARE TIRE General Motors, LLC (GM) is recalling certain 2026 Chevrolet Silverado EV and...
SILVERADO EV 2026 ELECTRICAL SYSTEM:PROPULSION SYSTEM:T... General Motors, LLC is recalling certain 2026 Cadillac Escalade IQ, Escalade ...
EXPRESS 2026 STEERING General Motors, LLC (GM) is recalling certain 2025-2026 Express, and 2025-202...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CHEVROLET dealer. Bring this bulletin ID (16NA377) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage, manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix, the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.