Cadillac Escalade 2021–2025 — technical service bulletin
Bulletin PIT6132A · NHTSA communication 11007787 · issued Sep 14, 2024
Technical service bulletin
communication type
Unknown / Other
component
2021–2025
model years
40
vehicle entries
Official summary
This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Engineering is working on a new HVAC door seal material to correct the noise.
Vehicles covered
- 2021 Cadillac Escalade
- 2022 Cadillac Escalade
- 2023 Cadillac Escalade
- 2024 Cadillac Escalade
- 2021 Chevrolet Silverado 1500
- 2022 Chevrolet Silverado 1500
- 2023 Chevrolet Silverado 1500
- 2024 Chevrolet Silverado 1500
- 2021 Chevrolet Silverado 2500
- 2022 Chevrolet Silverado 2500
- 2023 Chevrolet Silverado 2500
- 2024 Chevrolet Silverado 2500
- 2025 Chevrolet Silverado 2500
- 2021 Chevrolet Silverado 3500
- 2022 Chevrolet Silverado 3500
- 2023 Chevrolet Silverado 3500
- 2024 Chevrolet Silverado 3500
- 2021 Chevrolet Suburban
- 2022 Chevrolet Suburban
- 2024 Chevrolet Suburban
- 2021 Chevrolet Tahoe
- 2022 Chevrolet Tahoe
- 2023 Chevrolet Tahoe
- 2024 Chevrolet Tahoe
- 2021 GMC Sierra 1500
- 2022 GMC Sierra 1500
- 2023 GMC Sierra 1500
- 2024 GMC Sierra 1500
- 2021 GMC Sierra 2500
- 2022 GMC Sierra 2500
- 2023 GMC Sierra 2500
- 2024 GMC Sierra 2500
- 2021 GMC Sierra 3500
- 2022 GMC Sierra 3500
- 2023 GMC Sierra 3500
- 2024 GMC Sierra 3500
- 2021 GMC Yukon
- 2022 GMC Yukon
- 2023 GMC Yukon
- 2024 GMC Yukon
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.