In all of the affected vehicles, there are shallow pressed valve seats in the cylinder heads

Bulletin number

20B21-A

Component

Engine and engine cooling

Summary

In all of the affected vehicles, there are shallow pressed valve seats in the cylinder heads. This may lead to a rough idle, engine misfires with a reduction in power/torque and a check engine/wrench light illuminated.

Owners of these vehicles have filed 144 complaints in the engine category.