Service bulletin PIT6132C
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11024703 |
| Published by NHTSA | 2025-11-02 |
| Manufacturer's number | PIT6132C |
| Manufacturer's date | 2025-10-22 |
| NHTSA component | UNKNOWN OR OTHER |
NHTSA's 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.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
| CADILLAC ESCALADE | 2021, 2022, 2023, 2024, 2025 |
|---|---|
| CADILLAC ESCALADE ESV | 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET SILVERADO 1500 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN 1500 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET TAHOE | 2021, 2022, 2023, 2024, 2025 |
| GMC SIERRA 1500 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2021, 2022, 2023, 2024, 2025 |
| GMC YUKON XL | 2021, 2022, 2023, 2024, 2025 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.