The driver and passenger heated seats each consist of the following components:

The body control module (BCM) is also involved in the operation of the heated seats.

Battery positive voltage is applied to both front heated seat modules from the rear fuse block IGN SEN Fuse. This allows the heated seats to operate only when the ignition is in the ON position. Battery positive voltage is also supplied at all times to the heated seat modules from the rear fuse block; HTDST L Fuse for the driver heated seat module, or, HTDST R for the passenger heated seat module. Both modules are grounded through the ground circuit to G201. The driver and passenger heated seat switches are both grounded through the switch ground circuits to G201

The driver and passenger heated seats are controlled by separate heated seat switches. When a heated seat switch is pressed once, the temperature is set to high heat and the module applies a low voltage through the heated seat high temperature indicator control circuit to illuminate the high heat indicator. When the switch is pressed a second time, the temperature is set to low heat and the module turns off the high heat indicator. The module then applies a low voltage through the heated seat low temperature indicator control circuit to illuminate the low heat indicator. During high or low heat, the module applies battery positive voltage through the heated seat element supply voltage circuit to the seat cushion and seat back heating elements. After the switch is pressed a third time, the module removes the voltage from the low heat indicator and the heating elements turning off the indicator and the heated seat. The heated seat module will also disable the heated seats when the ignition switch has been turned to the OFF position.

The heated seat system is designed in order to warm the seat cushion and seat back to approximately 42°C (107.6°F) when in the high position, and 37°C (98.6°F) when in the low position. The heated seat module monitors the seat temperature through the temperature sensor signal circuit and the temperature sensor (thermistor) that is located in the seat cushion. The temperature sensor is a variable resistor, it's resistance changes as the temperature of the seat changes. When the temperature sensor resistance indicates to the heated seat module that the seat has reached the desired temperature, the module opens the path to ground from the heating elements. The module will then cycle the controlled ground open and closed in order to maintain the desired temperature.

The load management feature controls the amount of power consumed in the vehicle under heavy power load demands. If the vehicle demands high power for over 2 minutes, the body control module (SBM) commands the heated seat module through the inhibit signal circuit to cycle the power output to the heater elements at approximately 50% of normal capacity. The load management feature occurs under the following conditions:

Due to the load management function, customers may complain that the heated seats do not warm up quickly or warm at a lower temperature than normal. Deactivating one of the above systems will deactivate the load management function.