GM Service Manual Online
For 1990-2009 cars only

Driver Seat Module

Battery Voltage: The scan tool displays the voltage level of the battery voltage supply circuit to the memory seat module.

Horizontal Motor Forward: The scan tool displays Active or Inactive. Whenever the horizontal adjuster motor is commanded to move the seat forward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Horizontal Motor Rearward: The scan tool displays Active or Inactive. Whenever the horizontal adjuster motor is commanded to move the seat rearward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Recline Motor Forward: The scan tool displays Active or Inactive. Whenever the recline adjuster motor is commanded to move the seat back forward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Recline Motor Rearward: The scan tool displays Active or Inactive. Whenever the recline adjuster motor is commanded to move the seat back rearward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Lumbar Motor Forward: The scan tool displays Active or Inactive. Whenever the lumbar adjuster motor is commanded to move the lumbar support forward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Lumbar Motor Rearward: The scan tool displays Active or Inactive. Whenever the lumbar adjuster motor is commanded to move the lumbar support rearward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Rear Vertical Motor Upward: The scan tool displays Active or Inactive. Whenever the rear vertical adjuster motor is commanded to move the rear of the seat upward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Rear Vertical Motor Downward: The scan tool displays Active or Inactive. Whenever the rear vertical adjuster motor is commanded to move the rear of the seat downward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Front Vertical Motor Upward: The scan tool displays Active or Inactive. Whenever the front vertical adjuster motor is commanded to move the front of the seat upward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Front Vertical Motor Downward: The scan tool displays Active or Inactive. Whenever the front vertical adjuster motor is commanded to move the front of the seat downward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Torso Motor Inward: The scan tool displays Active or Inactive. Whenever the torso adjuster motor is commanded to move the torso bolster inward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Torso Motor Outward: The scan tool displays Active or Inactive. Whenever the torso adjuster motor is commanded to move the torso bolster outward, due to a manual switch input or a memory recall function, the scan tool displays Active.

Lumbar Forward Switch: The scan tool displays Active or Inactive. When the lumbar switch is operated in the forward direction the scan tool displays Active.

Lumbar Rearward Switch: The scan tool displays Active or Inactive. When the lumbar switch is operated in the rearward direction the scan tool displays Active.

Torso Inward Switch: The scan tool displays Active or Inactive. When the torso switch is operated in the inward direction the scan tool displays Active.

Torso Outward Switch: The scan tool displays Active or Inactive. When the torso switch is operated in the outward direction the scan tool displays Active.

Recline Forward Switch: The scan tool displays Active or Inactive. When the recline switch is operated in the forward direction the scan tool displays Active.

Recline Rearward Switch: The scan tool displays Active or Inactive. When the recline switch is operated in the rearward direction the scan tool displays Active.

Horizontal Forward Switch: The scan tool displays Active or Inactive. When the horizontal seat adjuster switch is operated in the forward direction the scan tool displays Active.

Horizontal Rearward Switch: The scan tool displays Active or Inactive. When the horizontal seat adjuster switch is operated in the rearward direction the scan tool displays Active.

Rear Vertical Upward Switch: The scan tool displays Active or Inactive. When the rear vertical adjuster switch is operated in the upward direction the scan tool displays Active.

Rear Vertical Downward Switch: The scan tool displays Active or Inactive. When the rear vertical adjuster switch is operated in the downward direction the scan tool displays Active.

Front Vertical Upward Switch: The scan tool displays Active or Inactive. When the front vertical adjuster switch is operated in the upward direction the scan tool displays Active.

Front Vertical Downward Switch: The scan tool displays Active or Inactive. When the front vertical adjuster switch is operated in the downward direction the scan tool displays Active.

Driver Heated Seat Status: The scan tool displays Off, High, Med, or Low depending on the current heat level operating mode.

Passenger Heated Seat Status: The scan tool displays Off, High, Med, or Low depending on the current heat level operating mode.

Driver Seat Heat Zone: The scan tool displays Off, Back Only, or Back and Cushion depending on the current heat zone operating mode.

Psgr. Seat Heat Zone: The scan tool displays Off, Back Only, or Back and Cushion depending on the current heat zone operating mode.

Front Vertical Position: The scan tool displays 0 to 65535 counts. The counts displayed are calculated by the memory seat module using the signal circuit input from the front vertical seat position sensor.

Rear Vertical Position: The scan tool displays 0 to 65535 counts. The counts displayed are calculated by the memory seat module using the signal circuit input from the rear vertical seat position sensor.

Horizontal Position: The scan tool displays 0 to 65535 counts. The counts displayed are calculated by the memory seat module using the signal circuit input from the horizontal seat position sensor.

Torso Position: The scan tool displays 0 to 65535 counts. The counts displayed are calculated by the memory seat module using the signal circuit input from the torso bolster position sensor.

Horizontal Lumbar Position: The scan tool displays 0 to 65535 counts. The counts displayed are calculated by the memory seat module using the signal circuit input from the lumbar support position sensor.

Vertical Lumbar Position: The scan tool displays 0 to 65535 counts. The counts displayed are calculated by the memory seat module using the signal circuit input from the lumbar support position sensor.

Recline Position: The scan tool displays 0.0 to 5.0 volts. The voltage displayed is an input to the memory seat module from the recline position sensor.

Drvr. Seat Heat Sensor: The scan tool displays 0.0 to 5.0 volts. The voltage displayed is an input to the memory seat module from the driver seat heat sensor.

Psgr. Seat Heat Sensor: The scan tool displays 0.0 to 5.0 volts. The voltage displayed is an input to the memory seat module from the passenger seat heat sensor.

Mem 1 Front Vertical Value: The scan tool displays 0 to 65535 counts. The value displayed is the front vertical seat position sensor counts stored by the memory seat module as the memory 1 position setting.

Mem 2 Front Vertical Value: The scan tool displays 0 to 65535 counts. The value displayed is the front vertical seat position sensor counts stored by the memory seat module as the memory 2 position setting.

Mem 1 Horizontal Value: The scan tool displays 0 to 65535 counts. The value displayed is the horizontal seat position sensor counts stored by the memory seat module as the memory 1 position setting.

Mem 2 Horizontal Value: The scan tool displays 0 to 65535 counts. The value displayed is the horizontal seat position sensor counts stored by the memory seat module as the memory 2 position setting.

Mem 1 Rear Vertical Value: The scan tool displays 0 to 65535 counts. The value displayed is the rear vertical seat position sensor counts stored by the memory seat module as the memory 1 position setting.

Mem 2 Rear Vertical Value: The scan tool displays 0 to 65535 counts. The value displayed is the rear vertical seat position sensor counts stored by the memory seat module as the memory 2 position setting.

Mem 1 Recline Value: The scan tool displays 0.0 to 5.0 volts. The value displayed is the recline position sensor signal voltage stored by the memory seat module as the memory 1 position setting.

Mem 2 Recline Value: The scan tool displays 0.0 to 5.0 volts. The value displayed is the recline position sensor signal voltage stored by the memory seat module as the memory 2 position setting.

Software Part Number: The scan tool displays the software identification number in the memory seat module.

Software Design Suffix: The scan tool displays the version of the software part number in the memory seat module.

Driver Door Module

Heated Seat Switch: The scan tool displays Active or Inactive. When the heated seat cushion switch is pressed the scan tool displays Active.

Heat Indicator Low: The scan tool displays On or Off. The scan tool displays the current status of the low heat operating mode determined by the heated seat switch signal circuit inputs to the driver door module.

Heat Indicator Medium: The scan tool displays On or Off. The scan tool displays the current status of the medium heat operating mode determined by the heated seat switch signal circuit inputs to the driver door module.

Heat Indicator High: The scan tool displays On or Off. The scan tool displays the current status of the high heat operating mode determined by the heated seat switch signal circuit inputs to the driver door module.

Back Only Heat Indicator: The scan tool displays On or Off. The scan tool displays the current status of the heated seat back only operating mode determined by the heated seat switch signal circuit inputs to the driver door module.

Back Only Heat Switch: The scan tool displays Active or Inactive. When the heated seat back switch is pressed the scan tool displays Active.

Memory Switch: The scan tool displays Memory 1, Memory 2, Both, or Idle. The scan tool displays the current memory switch status determined by the memory 1 and memory 2 signal circuit inputs to the driver door module.

Heat Indicator Low: The scan tool displays On or Off. Whenever the low heat indicator is commanded on by the driver door module the scan tool displays On.

Heat Indicator Medium: The scan tool displays On or Off. Whenever the medium heat indicator is commanded on by the driver door module the scan tool displays On.

Heat Indicator High: The scan tool displays On or Off. Whenever the high heat indicator is commanded on by the driver door module the scan tool displays On.

Back Only Heat Indicator: The scan tool displays On or Off. Whenever the heated seat back only indicator is commanded on by the driver door module the scan tool displays On.

Passenger Door Module

Heated Seat Switch: The scan tool displays Active or Inactive. When the heated seat cushion switch is pressed the scan tool displays Active.

Heat Indicator Low: The scan tool displays On or Off. The scan tool displays the current status of the low heat operating mode determined by the heated seat switch signal circuit inputs to the passenger door module.

Heat Indicator Medium: The scan tool displays On or Off. The scan tool displays the current status of the medium heat operating mode determined by the heated seat switch signal circuit inputs to the passenger door module.

Heat Indicator High: The scan tool displays On or Off. The scan tool displays the current status of the high heat operating mode determined by the heated seat switch signal circuit inputs to the passenger door module.

Back Only Heat Indicator: The scan tool displays On or Off. The scan tool displays the current status of the heated seat back only operating mode determined by the heated seat switch signal circuit inputs to the passenger door module.

Back Only Heat Switch: The scan tool displays Active or Inactive. When the heated seat back switch is pressed the scan tool displays Active.

Heat Indicator Low: The scan tool displays On or Off. Whenever the low heat indicator is commanded on by the passenger door module the scan tool displays On.

Heat Indicator Medium: The scan tool displays On or Off. Whenever the medium heat indicator is commanded on by the passenger door module the scan tool displays On.

Heat Indicator High: The scan tool displays On or Off. Whenever the high heat indicator is commanded on by the passenger door module the scan tool displays On.

Back Only Heat Indicator: The scan tool displays On or Off. Whenever the heated seat back only indicator is commanded on by the passenger door module the scan tool displays On.