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TSB: BUICK ACADIA, ATS, CAMARO, CANYON, CT6, CTS, ENVISION, EQUINOX, IMPALA, LACROSSE, MALIBU, REGAL, TERRAIN, TRAVERSE, XT5, XTS (2016–2019)

Bulletin 18NA201 — May 5, 2021

Bulletin Details

Bulletin ID18NA201
ManufacturerBUICK
ModelsACADIA, ATS, CAMARO, CANYON, CT6, CTS, ENVISION, EQUINOX, IMPALA, LACROSSE, MALIBU, REGAL, TERRAIN, TRAVERSE, XT5, XTS
Model Years2016–2019
Date IssuedMay 5, 2021
Date Added to NHTSAJuly 19, 2021
ComponentENGINE (PWS)
Vehicles Affected120 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 seal the bedplate bolt #621 if found the cause of the oil leak.

Affected Vehicles

MakeModelYearComponent
GMC ACADIA 2019 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2019 060000 ENGINE (PWS)
CADILLAC ATS 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2019 060000 ENGINE (PWS)
CHEVROLET CAMARO 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2019 060000 ENGINE (PWS)
GMC CANYON 2019 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2019 060000 ENGINE (PWS)
CADILLAC CT6 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2019 060000 ENGINE (PWS)
CADILLAC CTS 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2019 060000 ENGINE (PWS)
BUICK ENVISION 2019 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2019 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2019 060000 ENGINE (PWS)
CHEVROLET IMPALA 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2019 060000 ENGINE (PWS)
BUICK LACROSSE 2019 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2019 060000 ENGINE (PWS)
CHEVROLET MALIBU 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET MALIBU 2019 060000 ENGINE (PWS)
BUICK REGAL 2019 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2019 060000 ENGINE (PWS)
GMC TERRAIN 2019 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2019 060000 ENGINE (PWS)
CHEVROLET TRAVERSE 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2019 060000 ENGINE (PWS)
CADILLAC XT5 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2019 060000 ENGINE (PWS)
CADILLAC XTS 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2019 060000 ENGINE (PWS)
GMC ACADIA 2018 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2018 060000 ENGINE (PWS)
CADILLAC ATS 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2018 060000 ENGINE (PWS)
CHEVROLET CAMARO 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2018 060000 ENGINE (PWS)
GMC CANYON 2018 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2018 060000 ENGINE (PWS)
CADILLAC CT6 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2018 060000 ENGINE (PWS)
CADILLAC CTS 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2018 060000 ENGINE (PWS)
BUICK ENVISION 2018 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2018 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2018 060000 ENGINE (PWS)
CHEVROLET IMPALA 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2018 060000 ENGINE (PWS)
BUICK LACROSSE 2018 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2018 060000 ENGINE (PWS)
CHEVROLET MALIBU 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET MALIBU 2018 060000 ENGINE (PWS)
BUICK REGAL 2018 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2018 060000 ENGINE (PWS)
GMC TERRAIN 2018 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2018 060000 ENGINE (PWS)
CHEVROLET TRAVERSE 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2018 060000 ENGINE (PWS)
CADILLAC XT5 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2018 060000 ENGINE (PWS)
CADILLAC XTS 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2018 060000 ENGINE (PWS)
GMC ACADIA 2017 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2017 060000 ENGINE (PWS)
CADILLAC ATS 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2017 060000 ENGINE (PWS)
CHEVROLET CAMARO 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2017 060000 ENGINE (PWS)
GMC CANYON 2017 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2017 060000 ENGINE (PWS)
CADILLAC CT6 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2017 060000 ENGINE (PWS)
CADILLAC CTS 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2017 060000 ENGINE (PWS)
BUICK ENVISION 2017 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2017 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2017 060000 ENGINE (PWS)
CHEVROLET IMPALA 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2017 060000 ENGINE (PWS)
CHEVROLET MALIBU 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET MALIBU 2017 060000 ENGINE (PWS)
BUICK REGAL 2017 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2017 060000 ENGINE (PWS)
GMC TERRAIN 2017 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2017 060000 ENGINE (PWS)
CHEVROLET TRAVERSE 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2017 060000 ENGINE (PWS)
CADILLAC XT5 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2017 060000 ENGINE (PWS)
CADILLAC XTS 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2017 060000 ENGINE (PWS)
GMC ACADIA 2016 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2016 060000 ENGINE (PWS)
CADILLAC ATS 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2016 060000 ENGINE (PWS)
CHEVROLET CAMARO 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2016 060000 ENGINE (PWS)
GMC CANYON 2016 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2016 060000 ENGINE (PWS)
CADILLAC CT6 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2016 060000 ENGINE (PWS)
CADILLAC CTS 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2016 060000 ENGINE (PWS)
BUICK ENVISION 2016 060000 ENGINE AND ENGINE COOLING
BUICK ENVISION 2016 060000 ENGINE (PWS)
CHEVROLET EQUINOX 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2016 060000 ENGINE (PWS)
CHEVROLET MALIBU 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET MALIBU 2016 060000 ENGINE (PWS)
BUICK REGAL 2016 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2016 060000 ENGINE (PWS)
GMC TERRAIN 2016 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2016 060000 ENGINE (PWS)
CHEVROLET TRAVERSE 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2016 060000 ENGINE (PWS)
CADILLAC XTS 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 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...
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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 (18NA201) 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