Cooled Seat Operation and Blower Motors

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

As mentioned above in the heated/cool ventilation module description, the seat cushion and seat back blower motors are each packaged with the TED as an assembly. Each ventilation heating and cooling module contains logic that will allow for the blower to operate only when the ignition is in the ON position and only during cooled seat operation. When a cooled seat switch is pressed, the seat ventilation heating and cooling modules applies a pre-determined voltage to the TED and blower motor. Then based on the feedback from the seat temperature sensor, the ventilation module controls the applied voltage to the TEDs and blower motors in order to maintain the desired seat temperature.

With the cooled seat system, the speed of the blower motor is not related to the High, Med, or Low input from the heated/cool seat switch.