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May 11, 2026 Service bulletin

The document makes technicians aware of a valvetrain tick noise that is created by one or more soft...

Chevrolet technical service bulletin PIP6101B for 2025-2026 Chevrolet Silverado 1500, 2025-2026 GMC Sierra 1500 and 2025-2026 Chevrolet Blazer and others.

Bulletin number
PIP6101B
Component
Unknown or other
Summary
The document makes technicians aware of a valvetrain tick noise that is created by one or more soft hydraulic valve lash adjusters. The soft lash adjuster concern is due to debris from the valve rocker arm, entering into the lash adjuster. The document instructs the technician to replace all of the lash adjusters and rocker arms in the entire engine if any soft lash adjusters are found.

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