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October 5, 2026 Service bulletin

Unknown or other

Chevrolet technical service bulletin PIT6477D for 2021-2027 Chevrolet Silverado 1500, 2021-2027 Chevrolet Tahoe and 2021-2027 GMC Sierra 1500 and others.

Bulletin number
PIT6477D
Component
Unknown or other
Summary
This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool

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