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December 13, 2019 Service bulletin

Pitstop 638: HVAC temperature blend door inoperative, ticking and/or making a popping noise

Kia technical service bulletin PS638 for 2016-2019 Kia Optima.

Bulletin number
PS638
Component
Equipment
Summary
PITSTOP 638: HVAC TEMPERATURE BLEND DOOR INOPERATIVE, TICKING AND/OR MAKING A POPPING NOISE - This Pitstop provides information regarding an inoperative, or clicking and popping noise concern from the heater box blend door.

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