Cadillac Escalade 2021–2024 — technical service bulletin
Bulletin 21-NA-028 · NHTSA communication 11012857 · issued Dec 17, 2024
Technical service bulletin
communication type
Power Train
component
2021–2024
model years
28
vehicle entries
Official summary
This technical bulletin provides a procedure to replace the rear diff fluid to correct the rear clutches from chattering, which create a moan type noise.
Vehicles covered
- 2021 Cadillac Escalade
- 2022 Cadillac Escalade
- 2023 Cadillac Escalade
- 2024 Cadillac Escalade
- 2021 Cadillac Escalade Esv
- 2022 Cadillac Escalade Esv
- 2023 Cadillac Escalade Esv
- 2024 Cadillac Escalade Esv
- 2021 Chevrolet Suburban
- 2022 Chevrolet Suburban
- 2024 Chevrolet Suburban
- 2021 Chevrolet Suburban 1500
- 2022 Chevrolet Suburban 1500
- 2023 Chevrolet Suburban 1500
- 2024 Chevrolet Suburban 1500
- 2021 Chevrolet Tahoe
- 2022 Chevrolet Tahoe
- 2023 Chevrolet Tahoe
- 2024 Chevrolet Tahoe
- 2021 GMC Yukon
- 2022 GMC Yukon
- 2023 GMC Yukon
- 2024 GMC Yukon
- 2021 GMC Yukon XL
- 2022 GMC Yukon XL
- 2023 GMC Yukon XL
- 2024 GMC Yukon XL
- 2023 GMC Yukon XL 1500
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.