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TSB: BUICK ACADIA, ATS, BLAZER, CAMARO, CANYON, CAPRICE POLICE PURSUIT, CAPTIVA SPORT, COLORADO, CT5, CT6, CTS, ENCLAVE, EQUINOX, IMPALA, LACROSSE, REGAL, SRX, TERRAIN, TRAVERSE, XT5, XT6, XTS (2010–2024)

Bulletin 21-NA-147 — December 13, 2023

Bulletin Details

Bulletin ID21-NA-147
ManufacturerBUICK
ModelsACADIA, ATS, BLAZER, CAMARO, CANYON, CAPRICE POLICE PURSUIT, CAPTIVA SPORT, COLORADO, CT5, CT6, CTS, ENCLAVE, EQUINOX, IMPALA, LACROSSE, REGAL, SRX, TERRAIN, TRAVERSE, XT5, XT6, XTS
Model Years2010–2024
Date IssuedDecember 13, 2023
Date Added to NHTSADecember 19, 2023
ComponentENGINE AND ENGINE COOLING
Vehicles Affected170 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 service bulletin provides a repair procedure to correct a customer concern of Coolant and/or Oil Leak, Malfunction Indicator Lamp (MIL) Illuminateda??.

Affected Vehicles

MakeModelYearComponent
BUICK ENCLAVE 2024 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2024 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2023 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET BLAZER 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2022 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2022 060000 ENGINE AND ENGINE COOLING
CADILLAC CT5 2022 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2022 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2022 060000 ENGINE AND ENGINE COOLING
CADILLAC XT6 2022 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET BLAZER 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2021 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2021 060000 ENGINE AND ENGINE COOLING
CADILLAC CT5 2021 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2021 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2021 060000 ENGINE AND ENGINE COOLING
CADILLAC XT6 2021 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET BLAZER 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2020 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2020 060000 ENGINE AND ENGINE COOLING
CADILLAC CT5 2020 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2020 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2020 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2020 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2020 060000 ENGINE AND ENGINE COOLING
CADILLAC XT6 2020 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET BLAZER 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2019 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2019 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2019 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2019 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2019 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2018 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2018 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2018 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2018 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2018 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2017 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2017 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2017 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2017 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2017 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2016 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2016 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2016 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC SRX 2016 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2016 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2015 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2015 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAPRICE POLICE PURSUIT 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2015 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2015 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2015 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2015 060000 ENGINE AND ENGINE COOLING
CADILLAC SRX 2015 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2015 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2015 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2014 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2014 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2014 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAPRICE POLICE PURSUIT 2014 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAPTIVA SPORT 2014 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2014 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2014 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2014 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2014 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2014 060000 ENGINE AND ENGINE COOLING
CADILLAC SRX 2014 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2014 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2014 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2014 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2013 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2013 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2013 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAPRICE POLICE PURSUIT 2013 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAPTIVA SPORT 2013 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2013 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2013 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2013 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2013 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2013 060000 ENGINE AND ENGINE COOLING
CADILLAC SRX 2013 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2013 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2013 060000 ENGINE AND ENGINE COOLING
CADILLAC XTS 2013 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2012 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2012 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAPRICE POLICE PURSUIT 2012 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAPTIVA SPORT 2012 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2012 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2012 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2012 060000 ENGINE AND ENGINE COOLING
CHEVROLET IMPALA 2012 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2012 060000 ENGINE AND ENGINE COOLING
CADILLAC SRX 2012 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2012 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2012 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2011 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2011 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2011 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2011 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2011 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2011 060000 ENGINE AND ENGINE COOLING
CADILLAC SRX 2011 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2011 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2011 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2010 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2010 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2010 060000 ENGINE AND ENGINE COOLING
BUICK ENCLAVE 2010 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2010 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2010 060000 ENGINE AND ENGINE COOLING
CADILLAC SRX 2010 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2010 060000 ENGINE AND ENGINE COOLING
CHEVROLET TRAVERSE 2010 060000 ENGINE AND ENGINE COOLING

Related BUICK Recalls

CampaignModelYearComponentSummary
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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized BUICK dealer. Bring this bulletin ID (21-NA-147) 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