TSB: CHEVROLET CRUZE, EQUINOX, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SUBURBAN, SUBURBAN 1500, TAHOE, TERRAIN, YUKON, YUKON XL, YUKON XL 1500 (2017–2024)

Bulletin 23-NA-032 — March 6, 2023

Bulletin Details

Bulletin ID23-NA-032
ManufacturerCHEVROLET
ModelsCRUZE, EQUINOX, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SILVERADO 5500HD, SILVERADO 6500HD, SUBURBAN, SUBURBAN 1500, TAHOE, TERRAIN, YUKON, YUKON XL, YUKON XL 1500
Model Years2017–2024
Date IssuedMarch 6, 2023
Date Added to NHTSAMay 8, 2024
ComponentENGINE AND ENGINE COOLING
Vehicles Affected143 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

The informational bulletin advises the tech to use the glow plug bore cleaner to reduce the chance of soot building up on the glow plug causing a premature failure.

Affected Vehicles

MakeModelYearComponent
GMC SIERRA 1500 2024 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2024 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2024 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2024 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2024 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2024 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2024 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 1500 2024 060000 ENGINE AND ENGINE COOLING
GMC YUKON 2024 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 1500 2023 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 1500 2023 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2023 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2023 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2023 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 1500 2023 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2023 060000 ENGINE AND ENGINE COOLING
GMC YUKON 2023 060000 ENGINE AND ENGINE COOLING
GMC YUKON 2023 060000 ENGINE AND ENGINE COOLING
GMC YUKON XL 2023 060000 ENGINE AND ENGINE COOLING
GMC YUKON XL 2023 060000 ENGINE AND ENGINE COOLING
GMC YUKON XL 1500 2023 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 1500 2022 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 1500 2022 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2022 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2022 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2022 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 4500HD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 4500HD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 5500HD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 5500HD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 6500HD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 6500HD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 1500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2022 060000 ENGINE AND ENGINE COOLING
GMC YUKON 2022 060000 ENGINE AND ENGINE COOLING
GMC YUKON 2022 060000 ENGINE AND ENGINE COOLING
GMC YUKON XL 2022 060000 ENGINE AND ENGINE COOLING
GMC YUKON XL 2022 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 1500 2021 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 1500 2021 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2021 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2021 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2021 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 4500HD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 4500HD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 5500HD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 5500HD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 6500HD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 6500HD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 1500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2021 060000 ENGINE AND ENGINE COOLING
GMC YUKON 2021 060000 ENGINE AND ENGINE COOLING
GMC YUKON 2021 060000 ENGINE AND ENGINE COOLING
GMC YUKON XL 2021 060000 ENGINE AND ENGINE COOLING
GMC YUKON XL 2021 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 1500 2020 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 1500 2020 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2020 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2020 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2020 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 4500HD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 4500HD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 5500HD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 5500HD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 6500HD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 6500HD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET CRUZE 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET CRUZE 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2019 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2019 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2019 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2019 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 4500HD 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 4500HD 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 5500HD 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 5500HD 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 6500HD 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 6500HD 2019 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2019 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET CRUZE 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET CRUZE 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET EQUINOX 2018 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2018 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2018 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2018 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2018 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2018 060000 ENGINE AND ENGINE COOLING
GMC TERRAIN 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET CRUZE 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET CRUZE 2017 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2017 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 2500 2017 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2017 060000 ENGINE AND ENGINE COOLING
GMC SIERRA 3500 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2017 060000 ENGINE AND ENGINE COOLING

Related CHEVROLET Recalls

CampaignModelYearComponentSummary
SILVERADO 3500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 2500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 1500 2018 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 1500 2018 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 2500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CHEVROLET dealer. Bring this bulletin ID (23-NA-032) 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.