TSB PIT6132E — Cadillac, Chevrolet and GMC Service bulletin
PIT6132E is a service bulletin on file with NHTSA for 7 Cadillac, Chevrolet and GMC models, 2021–2026 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. 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.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIT6132E names
| Vehicle | Model years |
|---|---|
| Cadillac Escalade | 2021, 2022, 2023, 2024, 2025 |
| Chevrolet Silverado 1500 | 2021, 2022, 2023, 2024, 2026 |
| Chevrolet Silverado 2500 | 2021, 2022, 2023, 2024, 2025, 2026 |
| Chevrolet Suburban | 2021, 2022, 2023, 2024, 2025, 2026 |
| Chevrolet Tahoe | 2021, 2022, 2023, 2024, 2025 |
| GMC Sierra 1500 | 2021, 2022, 2023, 2024, 2025, 2026 |
| GMC Yukon | 2021, 2022, 2023, 2024, 2025 |
Every document filed under PIT6132E
| Document ID | Filed | Type |
|---|---|---|
| PIT6132E | June 9, 2026 | Service bulletin |
Questions buyers ask
What is TSB PIT6132E?
PIT6132E is a service bulletin filed with NHTSA by Cadillac, Chevrolet and GMC, covering 7 Cadillac, Chevrolet and GMC models across the 2021–2026 model years. NHTSA's summary reads: 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.
Which vehicles does PIT6132E cover?
NHTSA's file names Cadillac Escalade (2021–2025); Chevrolet Silverado 1500 (2021–2024, 2026); Chevrolet Silverado 2500 (2021–2026); Chevrolet Suburban (2021–2026); Chevrolet Tahoe (2021–2025); GMC Sierra 1500 (2021–2026); GMC Yukon (2021–2025). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB PIT6132E a recall, and is the repair free?
No. PIT6132E is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of PIT6132E?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under PIT6132E, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under PIT6132E. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.