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TSB: BUICK ACADIA, ATS, BLAZER, CAMARO, CANYON, COLORADO, CT5, CT6, CTS, CTS-V, LACROSSE, REGAL, REGAL TOURX, XT5, XT6 (2016–2022)

Bulletin 21-NA-036 — March 11, 2022

Bulletin Details

Bulletin ID21-NA-036
ManufacturerBUICK
ModelsACADIA, ATS, BLAZER, CAMARO, CANYON, COLORADO, CT5, CT6, CTS, CTS-V, LACROSSE, REGAL, REGAL TOURX, XT5, XT6
Model Years2016–2022
Date IssuedMarch 11, 2022
Date Added to NHTSAMarch 29, 2022
ComponentENGINE AND ENGINE COOLING
Vehicles Affected198 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 advises the technician of a diagnostic test for a possible issue with a damaged OCV solenoid that may cause an oil leak and misfire, illuminating the MIL and setting DTCs P0300, P0302 and/or P0305.

Affected Vehicles

MakeModelYearComponent
GMC ACADIA 2022 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2022 110000 ELECTRICAL SYSTEM
GMC ACADIA 2022 350000 EQUIPMENT
CHEVROLET BLAZER 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET BLAZER 2022 110000 ELECTRICAL SYSTEM
CHEVROLET BLAZER 2022 350000 EQUIPMENT
CHEVROLET CAMARO 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2022 110000 ELECTRICAL SYSTEM
CHEVROLET CAMARO 2022 350000 EQUIPMENT
GMC CANYON 2022 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2022 110000 ELECTRICAL SYSTEM
GMC CANYON 2022 350000 EQUIPMENT
CHEVROLET COLORADO 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2022 110000 ELECTRICAL SYSTEM
CHEVROLET COLORADO 2022 350000 EQUIPMENT
CADILLAC CT5 2022 060000 ENGINE AND ENGINE COOLING
CADILLAC CT5 2022 110000 ELECTRICAL SYSTEM
CADILLAC CT5 2022 350000 EQUIPMENT
CADILLAC XT5 2022 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2022 110000 ELECTRICAL SYSTEM
CADILLAC XT5 2022 350000 EQUIPMENT
CADILLAC XT6 2022 060000 ENGINE AND ENGINE COOLING
CADILLAC XT6 2022 110000 ELECTRICAL SYSTEM
CADILLAC XT6 2022 350000 EQUIPMENT
GMC ACADIA 2021 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2021 110000 ELECTRICAL SYSTEM
GMC ACADIA 2021 350000 EQUIPMENT
CHEVROLET BLAZER 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET BLAZER 2021 110000 ELECTRICAL SYSTEM
CHEVROLET BLAZER 2021 350000 EQUIPMENT
CHEVROLET CAMARO 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2021 110000 ELECTRICAL SYSTEM
CHEVROLET CAMARO 2021 350000 EQUIPMENT
GMC CANYON 2021 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2021 110000 ELECTRICAL SYSTEM
GMC CANYON 2021 350000 EQUIPMENT
CHEVROLET COLORADO 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2021 110000 ELECTRICAL SYSTEM
CHEVROLET COLORADO 2021 350000 EQUIPMENT
CADILLAC CT5 2021 060000 ENGINE AND ENGINE COOLING
CADILLAC CT5 2021 110000 ELECTRICAL SYSTEM
CADILLAC CT5 2021 350000 EQUIPMENT
CADILLAC XT5 2021 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2021 110000 ELECTRICAL SYSTEM
CADILLAC XT5 2021 350000 EQUIPMENT
CADILLAC XT6 2021 060000 ENGINE AND ENGINE COOLING
CADILLAC XT6 2021 110000 ELECTRICAL SYSTEM
CADILLAC XT6 2021 350000 EQUIPMENT
GMC ACADIA 2020 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2020 110000 ELECTRICAL SYSTEM
GMC ACADIA 2020 350000 EQUIPMENT
CHEVROLET BLAZER 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET BLAZER 2020 110000 ELECTRICAL SYSTEM
CHEVROLET BLAZER 2020 350000 EQUIPMENT
CHEVROLET CAMARO 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2020 110000 ELECTRICAL SYSTEM
CHEVROLET CAMARO 2020 350000 EQUIPMENT
GMC CANYON 2020 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2020 110000 ELECTRICAL SYSTEM
GMC CANYON 2020 350000 EQUIPMENT
CHEVROLET COLORADO 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2020 110000 ELECTRICAL SYSTEM
CHEVROLET COLORADO 2020 350000 EQUIPMENT
CADILLAC CT5 2020 060000 ENGINE AND ENGINE COOLING
CADILLAC CT5 2020 110000 ELECTRICAL SYSTEM
CADILLAC CT5 2020 350000 EQUIPMENT
CADILLAC CT6 2020 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2020 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2020 350000 EQUIPMENT
BUICK REGAL 2020 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2020 110000 ELECTRICAL SYSTEM
BUICK REGAL 2020 350000 EQUIPMENT
CADILLAC XT5 2020 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2020 110000 ELECTRICAL SYSTEM
CADILLAC XT5 2020 350000 EQUIPMENT
CADILLAC XT6 2020 060000 ENGINE AND ENGINE COOLING
CADILLAC XT6 2020 110000 ELECTRICAL SYSTEM
CADILLAC XT6 2020 350000 EQUIPMENT
GMC ACADIA 2019 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2019 110000 ELECTRICAL SYSTEM
GMC ACADIA 2019 350000 EQUIPMENT
CADILLAC ATS 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2019 110000 ELECTRICAL SYSTEM
CADILLAC ATS 2019 350000 EQUIPMENT
CHEVROLET BLAZER 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET BLAZER 2019 110000 ELECTRICAL SYSTEM
CHEVROLET BLAZER 2019 350000 EQUIPMENT
CHEVROLET CAMARO 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2019 110000 ELECTRICAL SYSTEM
CHEVROLET CAMARO 2019 350000 EQUIPMENT
GMC CANYON 2019 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2019 110000 ELECTRICAL SYSTEM
GMC CANYON 2019 350000 EQUIPMENT
CHEVROLET COLORADO 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2019 110000 ELECTRICAL SYSTEM
CHEVROLET COLORADO 2019 350000 EQUIPMENT
CADILLAC CT6 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2019 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2019 350000 EQUIPMENT
CADILLAC CTS 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2019 110000 ELECTRICAL SYSTEM
CADILLAC CTS 2019 350000 EQUIPMENT
BUICK LACROSSE 2019 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2019 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2019 350000 EQUIPMENT
BUICK REGAL 2019 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2019 110000 ELECTRICAL SYSTEM
BUICK REGAL 2019 350000 EQUIPMENT
CADILLAC XT5 2019 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2019 110000 ELECTRICAL SYSTEM
CADILLAC XT5 2019 350000 EQUIPMENT
GMC ACADIA 2018 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2018 110000 ELECTRICAL SYSTEM
GMC ACADIA 2018 350000 EQUIPMENT
CADILLAC ATS 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2018 110000 ELECTRICAL SYSTEM
CADILLAC ATS 2018 350000 EQUIPMENT
CHEVROLET CAMARO 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2018 110000 ELECTRICAL SYSTEM
CHEVROLET CAMARO 2018 350000 EQUIPMENT
GMC CANYON 2018 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2018 110000 ELECTRICAL SYSTEM
GMC CANYON 2018 350000 EQUIPMENT
CHEVROLET COLORADO 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2018 110000 ELECTRICAL SYSTEM
CHEVROLET COLORADO 2018 350000 EQUIPMENT
CADILLAC CT6 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2018 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2018 350000 EQUIPMENT
CADILLAC CTS 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2018 110000 ELECTRICAL SYSTEM
CADILLAC CTS 2018 350000 EQUIPMENT
CADILLAC CTS-V 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS-V 2018 110000 ELECTRICAL SYSTEM
CADILLAC CTS-V 2018 350000 EQUIPMENT
BUICK LACROSSE 2018 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2018 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2018 350000 EQUIPMENT
BUICK REGAL 2018 060000 ENGINE AND ENGINE COOLING
BUICK REGAL 2018 110000 ELECTRICAL SYSTEM
BUICK REGAL 2018 350000 EQUIPMENT
BUICK REGAL TOURX 2018 060000 ENGINE AND ENGINE COOLING
BUICK REGAL TOURX 2018 110000 ELECTRICAL SYSTEM
BUICK REGAL TOURX 2018 350000 EQUIPMENT
CADILLAC XT5 2018 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2018 110000 ELECTRICAL SYSTEM
CADILLAC XT5 2018 350000 EQUIPMENT
GMC ACADIA 2017 060000 ENGINE AND ENGINE COOLING
GMC ACADIA 2017 110000 ELECTRICAL SYSTEM
GMC ACADIA 2017 350000 EQUIPMENT
CADILLAC ATS 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2017 110000 ELECTRICAL SYSTEM
CADILLAC ATS 2017 350000 EQUIPMENT
CHEVROLET CAMARO 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2017 110000 ELECTRICAL SYSTEM
CHEVROLET CAMARO 2017 350000 EQUIPMENT
GMC CANYON 2017 060000 ENGINE AND ENGINE COOLING
GMC CANYON 2017 110000 ELECTRICAL SYSTEM
GMC CANYON 2017 350000 EQUIPMENT
CHEVROLET COLORADO 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET COLORADO 2017 110000 ELECTRICAL SYSTEM
CHEVROLET COLORADO 2017 350000 EQUIPMENT
CADILLAC CT6 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2017 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2017 350000 EQUIPMENT
CADILLAC CTS 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2017 110000 ELECTRICAL SYSTEM
CADILLAC CTS 2017 350000 EQUIPMENT
BUICK LACROSSE 2017 060000 ENGINE AND ENGINE COOLING
BUICK LACROSSE 2017 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2017 350000 EQUIPMENT
CADILLAC XT5 2017 060000 ENGINE AND ENGINE COOLING
CADILLAC XT5 2017 110000 ELECTRICAL SYSTEM
CADILLAC XT5 2017 350000 EQUIPMENT
CADILLAC ATS 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC ATS 2016 110000 ELECTRICAL SYSTEM
CADILLAC ATS 2016 350000 EQUIPMENT
CHEVROLET CAMARO 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2016 110000 ELECTRICAL SYSTEM
CHEVROLET CAMARO 2016 350000 EQUIPMENT
CADILLAC CT6 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC CT6 2016 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2016 350000 EQUIPMENT
CADILLAC CTS 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS 2016 110000 ELECTRICAL SYSTEM
CADILLAC CTS 2016 350000 EQUIPMENT
CADILLAC CTS-V 2016 060000 ENGINE AND ENGINE COOLING
CADILLAC CTS-V 2016 110000 ELECTRICAL SYSTEM
CADILLAC CTS-V 2016 350000 EQUIPMENT

Related BUICK Recalls

CampaignModelYearComponentSummary
REGAL 2013 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 (21-NA-036) 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.

All BUICK TSBs Browse All TSBs BUICK Complaints BUICK Recalls

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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