FixVault

Circuit/System Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:
    • The seat position sensor
    • The SDM module
    • The seat position sensor wiring harness connector
    • The SDM wiring harness connector
  1. Ignition OFF, if DTC B0079 is current, disconnect the left SPS connector. Refer to Seat Position Sensor Replacement  in Repair Instructions for location of connector.
  2. Remove the SDM connector. Refer to SDM Replacement  in Repair Instructions for connector location.
  3. Test the low reference and signal circuits between the SDM and SPS. Verify that a short to voltage, short to ground, or open/low resistance does not exist.
    • If any of the above conditions are found, make the appropriate repair.
  4. Reconnect all SIR components. Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify DTC B0079 does not set.
    • If DTC B0079 was current, replace the left SPS. After replacement, refer to Repair Verification .