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April 16, 2026 Service bulletin

Unknown or other

Chevrolet technical service bulletin PIT6505 for 2024-2026 Chevrolet Tahoe, 2024 Chevrolet Suburban and 2024-2026 GMC Yukon and others.

Bulletin number
PIT6505
Component
Unknown or other
Summary
This preliminary information communicates an issue with an SES MIL DTC P2B87 and/or P2B86 cause by the Aux heater coolant pump have an unwanted oring stuck in the pump. Dealers are to remove oring and reinstall pump.

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