GM Service Manual Online
For 1990-2009 cars only
Battery Voltage: The scan tool displays 0-16 Volts. The level of battery voltage at the module.

Current: The scan tool displays 0-127.5 Amps. The current measured during seat operation.

Front Vertical Sensor: The scan tool displays 0-5.0 Volts or 0-255 A/D. The sensor potentiometer provides an analog voltage which varies directly with the seat front vertical position. High scan tool values (Volts or A/D) indicate that the seat front is in the up position and low values indicate that the seat front is in the down position.

Headrest Down: The scan tool displays Inactive/Active. When the headrest down switch is activated, the scan tool will momentarily display Active.

Headrest Up: The scan tool displays Inactive/Active. When the headrest up switch is activated, the scan tool will momentarily display Active.

Headrest Sensor: The scan tool displays 0-5.0 Volts or 0-255 A/D. The sensor potentiometer provides an analog voltage which varies directly with the headrest position. High scan tool values (Volts or A/D) indicate that the headrest is in the up position and low values indicate that the headrest is in the down position.

Heated Seat LED: The scan tool displays Idle/High/Low. These parameters indicate the mode of operation that has been selected.

Heated Seat Temperature: The scan tool displays Off/On. When the heated seat temperature switch is first activated, the scan tool will momentarily display On and the heated seat module will be in high mode. With each additional activation of the switch the heated seat module will increment through the remaining modes (Low/Off).

Horizontal Sensor: The scan tool displays 0-5.0 Volts or 0-255 A/D. The sensor potentiometer provides an analog voltage which varies directly with the seat horizontal position. High scan tool values (Volts or A/D) indicate that the seat is in the forward position and low values indicate that the seat is in the backward position.

Lumbar Horizontal Sensor: The scan tool displays 0-5.0 Volts or 0-255 A/D. The sensor potentiometer provides an analog voltage which varies directly with the lumbar horizontal position. High scan tool values (Volts or A/D) indicate that the Lumbar is in the forward position and low values indicate that the lumbar is in the backward position.

Lumbar Vertical Sensor: The scan tool displays 0-5.0 Volts or 0-255 A/D. The sensor potentiometer provides an analog voltage which varies directly with the lumbar vertical position. High scan tool values (Volts or A/D) indicate that the lumbar is in the up position and low values indicate that the lumbar is in the down position.

Memory Recall Switches: The scan tool displays Idle/Memory 1/memory 2/Exit/Set. When a memory function switch is activated, the scan tool will momentarily display the function as selected.

Rear Vertical Sensor: The scan tool displays 0-5.0 Volts or 0-255 A/D. The sensor potentiometer provides an analog voltage which varies directly with the seat rear vertical position. High scan tool values (Volts or A/D) indicate that the seat rear vertical is in the up position and low values indicate that the seat rear vertical is in the down position.

Recline Sensor: The scan tool displays 0-5.0 Volts or 0-255 A/D. The sensor potentiometer provides an analog voltage which varies directly with the seat recline position. High scan tool values (Volts or A/D) indicate that the seat recline is in the froward position and low values indicate that the seat recline is in the rearward position.

Seat Backward: The scan tool displays Inactive/Active. When the seat horizontal back switch is activated the scan tool will momentarily display Active.

Seat Forward: The scan tool displays Inactive/Active. When the seat horizontal forward switch is activated the scan tool will momentarily display Active.

Seat Front Down: The scan tool displays Inactive/Active. When the seat front vertical down switch is activated the scan tool will momentarily display Active.

Seat Front Up: The scan tool displays Inactive/Active. When the seat front vertical up switch is activated, the scan tool will momentarily display Active.

Seat Lumbar Backward: The scan tool displays Inactive/Active. When the lumbar horizontal back switch is activated, the scan tool will momentarily display Active.

Seat Lumbar Down: The scan tool displays Inactive/Active. When the lumbar vertical down switch is activated, the scan tool will momentarily display Active.

Seat Lumbar Forward: The scan tool displays Inactive/Active. When the lumbar horizontal forward switch is activated, the scan tool momentarily displays Active.

Seat Lumbar Up: The scan tool displays Inactive/Active. When the lumbar vertical up switch is activated, the scan tool will momentarily display Active.

Seat Rear Down: The scan tool displays Inactive/Active. When the seat rear vertical down switch is activated, the scan tool will momentarily display Active.

Seat Rear Up: The scan tool displays Inactive/Active. When the seat rear vertical up switch is activated, the scan tool will momentarily display Active.

Seat Recline Backward: The scan tool displays Inactive/Active. When the seat recline back switch is activated, the scan tool will momentarily display Active.

Seat Recline Forward: The scan tool displays Inactive/Active. When the seat recline forward switch is activated, the scan tool will momentarily display Active.