Chevrolet Silverado 2500 2015–2025 — technical service bulletin

Bulletin 21-NA-138 · NHTSA communication 11014358 · issued Feb 14, 2025

Technical service bulletin

communication type

Suspension

component

2015–2025

model years

vehicle entries

Official summary

This service bulletin provides a repair procedure to correct a customer concern of a Squeak, Grind or Clunking Noise from Rear Leaf Springs.

Vehicles covered

2015 Chevrolet Silverado 2500
2016 Chevrolet Silverado 2500
2017 Chevrolet Silverado 2500
2018 Chevrolet Silverado 2500
2019 Chevrolet Silverado 2500
2020 Chevrolet Silverado 2500
2021 Chevrolet Silverado 2500
2022 Chevrolet Silverado 2500
2023 Chevrolet Silverado 2500
2024 Chevrolet Silverado 2500
2025 Chevrolet Silverado 2500
2015 Chevrolet Silverado 3500
2016 Chevrolet Silverado 3500
2017 Chevrolet Silverado 3500
2018 Chevrolet Silverado 3500
2019 Chevrolet Silverado 3500
2020 Chevrolet Silverado 3500
2021 Chevrolet Silverado 3500
2022 Chevrolet Silverado 3500
2023 Chevrolet Silverado 3500
2024 Chevrolet Silverado 3500
2025 Chevrolet Silverado 3500
2015 GMC Sierra 2500
2016 GMC Sierra 2500
2017 GMC Sierra 2500
2018 GMC Sierra 2500
2019 GMC Sierra 2500
2020 GMC Sierra 2500
2021 GMC Sierra 2500
2022 GMC Sierra 2500
2023 GMC Sierra 2500
2024 GMC Sierra 2500
2025 GMC Sierra 2500
2015 GMC Sierra 3500
2016 GMC Sierra 3500
2017 GMC Sierra 3500
2018 GMC Sierra 3500
2019 GMC Sierra 3500
2020 GMC Sierra 3500
2021 GMC Sierra 3500
2022 GMC Sierra 3500
2023 GMC Sierra 3500
2024 GMC Sierra 3500
2025 GMC Sierra 3500
2015 GMC Sierra Denali
2016 GMC Sierra Denali
2017 GMC Sierra Denali
2018 GMC Sierra Denali
2019 GMC Sierra Denali
2020 GMC Sierra Denali

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.