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TSB: BUICK ENVISION, EQUINOX, TERRAIN (2016–2022)

Bulletin 18NA020 — December 21, 2018

Bulletin Details

Bulletin ID18NA020
ManufacturerBUICK
ModelsENVISION, EQUINOX, TERRAIN
Model Years2016–2022
Date IssuedDecember 21, 2018
Date Added to NHTSAMay 31, 2022
ComponentENGINE (PWS)
Vehicles Affected107 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 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.

Affected Vehicles

MakeModelYearComponent
CHEVROLET EQUINOX 2022 120000 EXTERIOR LIGHTING
GMC TERRAIN 2022 120000 EXTERIOR LIGHTING
CHEVROLET EQUINOX 2021 138900 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES
CHEVROLET EQUINOX 2021 120000 EXTERIOR LIGHTING
GMC TERRAIN 2021 138900 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES
GMC TERRAIN 2021 120000 EXTERIOR LIGHTING
BUICK ENVISION 2020 120000 EXTERIOR LIGHTING
BUICK ENVISION 2020 350000 EQUIPMENT
BUICK ENVISION 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
BUICK ENVISION 2020 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2020 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2020 120000 EXTERIOR LIGHTING
CHEVROLET EQUINOX 2020 350000 EQUIPMENT
CHEVROLET EQUINOX 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET EQUINOX 2020 110000 ELECTRICAL SYSTEM
CHEVROLET EQUINOX 2020 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2020 138900 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES
CHEVROLET EQUINOX 2020 120000 EXTERIOR LIGHTING
GMC TERRAIN 2020 120000 EXTERIOR LIGHTING
GMC TERRAIN 2020 350000 EQUIPMENT
GMC TERRAIN 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC TERRAIN 2020 110000 ELECTRICAL SYSTEM
GMC TERRAIN 2020 060000 ENGINE (PWS)
GMC TERRAIN 2020 138900 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES
GMC TERRAIN 2020 120000 EXTERIOR LIGHTING
BUICK ENVISION 2019 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2019 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2019 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2019 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2019 120000 EXTERIOR LIGHTING
BUICK ENVISION 2019 350000 EQUIPMENT
BUICK ENVISION 2019 356000 EQUIPMENT ADAPTIVE/MOBILITY
BUICK ENVISION 2019 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2019 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2019 110000 ELECTRICAL SYSTEM
CHEVROLET EQUINOX 2019 120000 EXTERIOR LIGHTING
CHEVROLET EQUINOX 2019 350000 EQUIPMENT
CHEVROLET EQUINOX 2019 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET EQUINOX 2019 110000 ELECTRICAL SYSTEM
CHEVROLET EQUINOX 2019 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2019 138900 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES
CHEVROLET EQUINOX 2019 120000 EXTERIOR LIGHTING
GMC TERRAIN 2019 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2019 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2019 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2019 110000 ELECTRICAL SYSTEM
GMC TERRAIN 2019 120000 EXTERIOR LIGHTING
GMC TERRAIN 2019 350000 EQUIPMENT
GMC TERRAIN 2019 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC TERRAIN 2019 110000 ELECTRICAL SYSTEM
GMC TERRAIN 2019 060000 ENGINE (PWS)
GMC TERRAIN 2019 138900 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES
GMC TERRAIN 2019 120000 EXTERIOR LIGHTING
BUICK ENVISION 2018 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2018 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2018 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2018 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2018 120000 EXTERIOR LIGHTING
BUICK ENVISION 2018 350000 EQUIPMENT
BUICK ENVISION 2018 356000 EQUIPMENT ADAPTIVE/MOBILITY
BUICK ENVISION 2018 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2018 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2018 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
CHEVROLET EQUINOX 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2018 110000 ELECTRICAL SYSTEM
CHEVROLET EQUINOX 2018 120000 EXTERIOR LIGHTING
CHEVROLET EQUINOX 2018 350000 EQUIPMENT
CHEVROLET EQUINOX 2018 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET EQUINOX 2018 110000 ELECTRICAL SYSTEM
CHEVROLET EQUINOX 2018 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2018 138900 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES
CHEVROLET EQUINOX 2018 120000 EXTERIOR LIGHTING
GMC TERRAIN 2018 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2018 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
GMC TERRAIN 2018 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2018 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2018 110000 ELECTRICAL SYSTEM
GMC TERRAIN 2018 120000 EXTERIOR LIGHTING
GMC TERRAIN 2018 350000 EQUIPMENT
GMC TERRAIN 2018 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC TERRAIN 2018 110000 ELECTRICAL SYSTEM
GMC TERRAIN 2018 060000 ENGINE (PWS)
GMC TERRAIN 2018 138900 VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES
GMC TERRAIN 2018 120000 EXTERIOR LIGHTING
BUICK ENVISION 2017 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2017 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2017 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2017 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2017 120000 EXTERIOR LIGHTING
BUICK ENVISION 2017 350000 EQUIPMENT
BUICK ENVISION 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
BUICK ENVISION 2017 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2017 060000 ENGINE (PWS)
BUICK ENVISION 2016 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2016 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2016 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2016 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2016 120000 EXTERIOR LIGHTING
BUICK ENVISION 2016 350000 EQUIPMENT
BUICK ENVISION 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
BUICK ENVISION 2016 110000 ELECTRICAL SYSTEM
BUICK ENVISION 2016 060000 ENGINE (PWS)

Related BUICK Recalls

CampaignModelYearComponentSummary
REGAL 2013 SUSPENSION:REAR General Motors, LLC (GM) is recalling certain 2012–2013 Buick Regal Turbo and...
REGAL 2012 SUSPENSION:REAR General Motors, LLC (GM) is recalling certain 2012–2013 Buick Regal Turbo and...
ENCLAVE 2026 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER ... General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cad...
ENVISION 2026 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER ... General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cad...
VERANO 2014 AIR BAGS:SIDE/WINDOW General Motors, LLC (GM) is recalling certain 2014 Buick Verano and Chevrolet...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized BUICK dealer. Bring this bulletin ID (18NA020) 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.

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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.

Back to All TSBs