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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1863 (THEFT DETERRENT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESINCLINATION SENSOR INOPERATIVECIRCUIT/SYSTEM TESTING
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Circuit/System Testing

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Circuit/System Testing
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Without Accessory Shock Sensor

  1. Ignition OFF, disconnect the harness connector at the inclination sensor.
  2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Test for B+ between the signal circuit terminal 3 and ground.
    • If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  4. Ignition OFF, connect the harness connector at the inclination sensor. Disconnect the X7 harness connector at the BCM.
  5. Ignition ON, test for B+ between the signal circuit terminal 15 and ground.
    • If not the specified value, test the signal circuit for a short to ground or and open/high resistance. If the circuit tests normal, replace the inclination sensor.
  6. If all circuits test normal, test or replace the inclination sensor.

With Accessory Shock Sensor

  1. Ignition OFF, disconnect the harness connector at the inclination sensor and the harness connector at the shock sensor.
  2. Ignition ON, verify a test lamp illuminates between the inclination sensor B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Test for B+ between the signal circuit terminal 3 and ground.
    • If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  4. Ignition OFF, connect the harness connector at the inclination sensor. Disconnect the X7 harness connector at the BCM.
  5. Ignition ON, test for B+ between the BCM signal circuit terminal 15 and ground.
    • If not the specified value, test the signal circuit for a short to ground or and open/high resistance. If the circuit tests normal, test or replace the inclination sensor.
  6. Ignition OFF, connect the harness connector at the shock sensor.
  7. Ignition ON, test for B+ between the BCM signal circuit terminal 15 and ground.
    • If not the specified value, test or replace the shock sensor.
  8. If all circuits test normal, test or replace the inclination sensor.
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