Colorado 2WD V8-5.3L (2009)
Seat Heater: Description and Operation
Heated Seats Description and Operation
Heated Seats System Operation
The driver and front passenger seats are heated using electric heater elements located in the seat cushions and seat backs. The heated seat control module
is connected to the seat cushion element and harness assembly, and controls the battery positive voltage used to supply the seat heater elements. The
heated seat switch and a thermistor, located in the seat cushion, are inputs to the heated seat control module. Ignition voltage is supplied to the heated
seat switch from the HVAC 20A fuse in the underhood BEC. When the heated seat switch is in the high or low positions, voltage is supplied through one
of the internal resistors to the switch signal circuit. Once the seat cushion has reached the desired temperature the heated seat control module will
maintain the thermistor signal circuit voltage level by switching the heater element supply circuit on or off as necessary. The passenger heated seat
switch must be enabled through the seat belt switch in order for heated seat operation to occur.
