Driver Seat Module (DSM)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

8 Digit GM Part Number: The scan tool displays the part number assigned to the DSM that is currently in the vehicle.
Battery Voltage: Displays the voltage of the battery positive supply circuit to the driver seat module.
Driver or Passenger Seat Heat Zone: Displays the active seat heat zones. The scan tool will display Back Only when the heated seat back is operating in the low, medium, or high modes and the heated seat cushion is off. Back and Cushion will be displayed when both heater elements are operating in the low, medium, or high modes.
Driver or Passenger Seat Temp Setting: Displays the current status of the heated seat temperature setting during back only or back and cushion heating modes.
Driver or Passenger Seat Heat Sensor: The scan tool displays the voltage level of the seat heat sensor signal circuit to the driver seat module. When the seat is cold the scan tool will display near 5 volts and as the seat temperature rises the signal voltage will decrease to near 0.0 volts.
Exit Front Vertical Value: Displays the current value in the driver seat module for seat position when exiting the vehicle.
Exit Horizontal Lumbar Value: Displays the current value in the driver seat module for horizontal lumbar position when exiting the vehicle.
Exit Horizontal Value: Displays the current value in the driver seat module for seat position when exiting the vehicle.
Exit Rear Vertical Value: Displays the current value in the driver seat module for seat position when exiting the vehicle.
Exit Recline Value: Displays the current value in the driver seat module for seat position when exiting the vehicle.
Exit Vertical Lumbar Value: Displays the current value in the driver seat module for vertical lumbar position when exiting the vehicle.
Front Vertical Motor: Displays the current state of the front vertical motor.
Front Vertical Position: Displays 0 to 5 volts for the current position of the seat. When the front of the driver seat is at the down stop the volts are near 0. As the rear of the driver seat is raised the voltage will increase until the up stop is reached where the voltage will be near 5 volts.
Front Vertical Position Switch: Displays the current status of the seat front vertical adjuster switch up, down, or inactive.
Horizontal Lumbar Motor: Displays the current state of the horizontal lumbar motor.
Horizontal Lumbar Position: Displays 0 to 5 volts for the current position of the lumbar support. When the lumbar is at the rearward stop the volts are near 0. As the horizontal lumbar is moved forward the voltage will increase until the forward stop is reached where the voltage will be near 5 volts.
Horizontal Motor: Displays the current state of the horizontal motor.
Horizontal Position Switch: Displays the current status of the seat horizontal adjuster switch forward, backward, or inactive.
Ignition Since Current DTC: Displays the number of ignition cycles on/off since the DTC set.
Julian Date of Build: The scan tool displays the date upon which the driver seat module (DSM) was manufactured.
Last Memory Recall: Displays the current value in the driver seat module for the last memory button pressed.
Last Memory Set: Displays the current value in the driver seat module for the last memory setting.
Lumbar/Bolster Switch: Displays the current status of the seat lumbar switch. The scan tool will display the direction that the lumbar switch is being operated.
Manufacture Enable Counter (MEC): The scan tool displays the actual value for the MEC in the DSM. This information is for the assembly plant only.
Mem 1 Front Vertical Value: Displays the current value in the driver seat module for seat position when using the memory switch 1 to recall a set position.
Mem 2 Front Vertical Value: Displays the current value in the driver seat module for seat position when using the memory switch 2 to recall a set position.
Mem 1 Horizontal Lumbar Value: Displays the current value in the driver seat module for horizontal lumbar position when using the memory switch 1 to recall a set position.
Mem 2 Horizontal Lumbar Value: Displays the current value in the driver seat module for horizontal lumbar position when using the memory switch 2 to recall a set position.
Mem 1 Horizontal Value: Displays the current value in the driver seat module for seat position when using the memory switch 1 to recall a set position.
Mem 2 Horizontal Value: Displays the current value in the driver seat module for seat position when using the memory switch 2 to recall a set position.
Mem 1 Rear Vertical Value: Displays the current value in the driver seat module for seat position when using the memory switch 1 to recall a set position.
Mem 2 Rear Vertical Value: Displays the current value in the driver seat module for seat position when using the memory switch 2 to recall a set position.
Mem 1 Recline Value: Displays the current value in the driver seat module for seat position when using the memory switch 1 to recall a set position.
Mem 2 Recline Value: Displays the current value in the driver seat module for seat position when using the memory switch 2 to recall a set position.
Mem 1 Vertical Lumbar Value: Displays the current value in the driver seat module for vertical lumbar position when using the memory switch 1 to recall a set position.
Mem 2 Vertical Lumbar Value: Displays the current value in the driver seat module for vertical lumbar position when using the memory switch 2 to recall a set position.
Rear Vertical Motor: Displays the current state of the rear vertical motor.
Rear Vertical Position: Displays 0 to 5 volts for the current position of the seat. When the rear of the driver seat is at the down stop the volts are near 0. As the rear of the driver seat is raised the voltage will increase until the up stop is reached where the voltage will be near 5 volts.
Rear Vertical Position Switch: Displays the current status of the seat rear vertical adjuster switch up, down, or inactive.
Recline Position: Displays 0 to 5 volts for the current position of the seat. When the driver seat back is at the rearward stop the volts are near 0. As the driver seat back is moved forward the voltage will increase until the forward stop is reached where the voltage will be near 5 volts.
Recline Switch: Displays the current status of the seat recline adjuster switch forward, backward, or inactive.
Recliner Motor: Displays the current state of the recliner motor.
Seat Horizontal Position: Displays 0 to 5 volts for the current position of the seat. When the driver seat is at the rearward stop the volts are near 0. As the driver seat is moved forward the voltage will increase until the forward stop is reached where the voltage will be near 5 volts.
Software Part Number: The scan tool displays the software identification number (ID) in the DSM.
Software Revision Number: The scan tool displays the version of the software part number in the DSM.
Vertical Lumbar Motor: Displays the current state of the vertical lumbar motor.
Vertical Lumbar Position: Displays 0 to 5 volts for the current position of the lumbar support. When the driver/passenger lumbar is at the rearward stop the volts are near 0. As the driver/passenger lumbar is moved forward the voltage will increase until the forward stop is reached where the voltage will be near 5 volts.
Year Module Built: The scan tool displays the year upon which the DSM was manufactured.