FixVault

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Chevrolet Monte Carlo and 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the HVAC control head. Verify the DTC resets.
    • If the DTC does not reset, replace the HVAC control head.
  2. Disconnect the radio. Verify the DTC resets.
    • If the DTC does not reset, replace the radio.
  3. Disconnect the DIC switch. Verify the DTC resets.
    • If the DTC does not reset, replace the DIC switch.
  4. Disconnect the cruise control switch. Verify the DTC resets.
    • If the DTC does not reset, replace the cruise control switch.
  5. Disconnect the steering wheel control switches. Verify the DTC resets.
    • If the DTC does not reset, replace the steering wheel control switches.
  6. Test for a short to ground in the LED Dimming Supply circuit.
    • If all circuits/connections test normal, replace the BCM.