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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 865 (Instrument Panel System Displays And Gauges) >> Diagnostic Information & Procedures >> DTC B3567 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the DIC switch assembly.
  2. Verify all of the scan tool DIC Switch parameters are Inactive.
    • If not Inactive, test both signal circuits of the DIC switch assembly for a short to ground. If the circuits test normal, replace the IPC.
  3. Ignition ON, install a 3-amp fused jumper wire between both signal circuits and ground. Verify all of the scan tool DIC Switch parameters are Active.
    • If not Active, test both signal circuits of the DIC switch assembly for a short to voltage. If the circuits test normal, replace the IPC.
  4. If all circuits test normal, test or replace the DIC switch assembly.
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