A whistle noise may be present within the HVAC system when switching from cabin heat to full cooling (A/C on)

Bulletin number

A25-028

Component

Visibility/wiper

Summary

Service Bulletin - A whistle noise may be present within the HVAC system when switching from cabin heat to full cooling (A/C on). While driving, the heat may begin to blow cold air and the blower speed may drop intermittently due to possible faulty air conditioner condenser check valve or improperly formed A/C line at the mating surface of the condenser check valve.

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