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September 26, 2017 Service bulletin

The customer may comment on a buzzing noise from the I/P area under heavy acceleration and most noticeable...

Cadillac technical service bulletin 16NA207 for 2016 Cadillac CT6 and 2017-2018 Cadillac Ct6 Plug-In Hybrid.

Bulletin number
16NA207
Component
Power train
Summary
The customer may comment on a buzzing noise from the I/P area under heavy acceleration and most noticeable after the vehicle engine has warmed up.

Owners of these vehicles have filed 14 complaints in the transmission category.

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