Chevrolet 6500 2017–2024 — technical service bulletin
Bulletin 17-NA-374 · NHTSA communication 10237935 · issued Jun 7, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2024
model years
43
vehicle entries
Official summary
This informational bulletin advises the technician of how the Soot information has changed from grams to percentage.
Vehicles covered
- 2019 Chevrolet 6500
- 2019 Chevrolet Duplicate Silverado 5500
- 2017 Chevrolet Silverado 1500
- 2018 Chevrolet Silverado 1500
- 2019 Chevrolet Silverado 2500
- 2020 Chevrolet Silverado 2500
- 2021 Chevrolet Silverado 2500
- 2022 Chevrolet Silverado 2500
- 2023 Chevrolet Silverado 2500
- 2024 Chevrolet Silverado 2500
- 2019 Chevrolet Silverado 3500
- 2020 Chevrolet Silverado 3500
- 2021 Chevrolet Silverado 3500
- 2022 Chevrolet Silverado 3500
- 2023 Chevrolet Silverado 3500
- 2024 Chevrolet Silverado 3500
- 2019 Chevrolet Silverado 4500
- 2020 Chevrolet Silverado 4500
- 2021 Chevrolet Silverado 4500
- 2022 Chevrolet Silverado 4500
- 2023 Chevrolet Silverado 4500
- 2019 Chevrolet Silverado 5500
- 2020 Chevrolet Silverado 5500
- 2021 Chevrolet Silverado 5500
- 2023 Chevrolet Silverado 5500
- 2019 Chevrolet Silverado 6500
- 2021 Chevrolet Silverado 6500
- 2022 Chevrolet Silverado 6500
- 2023 Chevrolet Silverado 6500
- 2017 GMC Sierra 1500
- 2018 GMC Sierra 1500
- 2019 GMC Sierra 2500
- 2020 GMC Sierra 2500
- 2021 GMC Sierra 2500
- 2022 GMC Sierra 2500
- 2023 GMC Sierra 2500
- 2024 GMC Sierra 2500
- 2019 GMC Sierra 3500
- 2020 GMC Sierra 3500
- 2021 GMC Sierra 3500
- 2022 GMC Sierra 3500
- 2023 GMC Sierra 3500
- 2024 GMC Sierra 3500
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.