Blower Motors

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Also, as mentioned above in the heated/cool ventilation module description, the seat cushion and seat back blower motors are each packaged with a TED and temperature sensor as an assembly. Each blower motor contains logic that will allow for the blower to operate only when the ignition is in the ON position. When the ignition is ON and the CCSM is powered up, the module supplies battery positive voltage through the blower supply voltage circuit to the logic of the blower motors. When the heated/cool seat switch is pressed, the CCSM applies a pre-determined voltage through the blower speed control circuits to the blower motors. The module also supplies each blower motor with a ground path through the blower low reference circuits.

With the climate control seat system, the speed of the blower motor is not related directly to the High, Med, or Low input from the heated/cool seat switch. The speed of the blower motor is related directly to TED temperature as described below in heated and cooled seat operation.