GM Service Manual Online
For 1990-2009 cars only
Base Model Part Number: The scan tool displays the part number of the module.

Battery Voltage: The scan tool displays 0-16 Volts. The voltage measured between the module's battery positive circuit and ground circuit.

Left Front Heated Seat Relay: The scan tool displays On/Off. This is the output of the body control module (BCM) to the driver's seat heated seat relay. The scan displays On when the heated seat is on. The relay is energized applying battery positive voltage to the seat heating elements.

Right Front Heated Seat Relay: The scan tool displays On/Off. This is the output of the body control module (BCM) to the passenger's seat heated seat relay. The scan displays On when the heated seat is on. The relay is energized applying battery positive voltage to the seat heating elements.