B2430 GMC – Passenger Seat Heater Circuit

B2430 GMC Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

B2430 GMC Possible Causes

Faulty Passenger Seat Heater,Passenger Seat Heater harness is open or shorted,Passenger Seat Heater circuit poor electrical connection,Faulty Driver Seat Module (DSM)

B2430 GMC Description

The Driver and Passenger Seat Heaters are controlled by the Driver Seat Module (DSM). Power is supplied to the driver seat cushion and back heater elements through individual voltage supply circuits. Power is supplied to the passenger seat cushion and back heater elements through a common voltage supply circuit. All of the driver and passenger seat heater elements are grounded by the DSM through individual low side drive control circuits. The heater element control circuits are pulse width modulated to ground by the DSM in order to control the seat temperatures by regulating the current flow through the heater elements.