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May 16, 2023 Service bulletin

Power train

Chevrolet technical service bulletin PIC6504 for 2016-2019 Chevrolet Volt.

Bulletin number
PIC6504
Component
Power train
Summary
This Preliminary information communicates that some on the Transmission were built without a TUN and what the steps are to program the Transmission.

Owners of these vehicles have filed 374 complaints in the transmission category.

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