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Service bulletin PIT6522

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11033987
Published by NHTSA2026-06-18
Manufacturer's numberPIT6522
Manufacturer's date2026-06-10
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This PI advises dealers that if the K160 Brake System Control Module sets DTC P0606 along with P0562 and/or P25A2, additional diagnostic aids should be followed before replacing parts. The PI provides guidance to inspect for low voltage conditions, wiring, terminal concerns, and module communication issues that may cause false or intermittent EBCM DTCs.

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.

Trouble codes named

P0562, P0606, P25A2

Vehicles listed
CADILLAC ESCALADE2021, 2022, 2023, 2024, 2025, 2026
CADILLAC ESCALADE ESV2021, 2022, 2023, 2024, 2025, 2026
CHEVROLET COLORADO2023, 2024, 2025, 2026
CHEVROLET SILVERADO 15002022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2024
CHEVROLET TAHOE2021, 2022, 2023, 2024, 2025
GMC ACADIA2024, 2025
GMC CANYON2023, 2024, 2025, 2026
GMC SIERRA 15002022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2021, 2022, 2023, 2024, 2025, 2026
GMC YUKON XL2021, 2022, 2023, 2024, 2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.