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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 976 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC P0573 >> Circuit/System Testing
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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 of the brake switch.
  2. Ignition ON, verify that a test lamp does not illuminate between the stop lamp switch TCC brake signal circuit terminal A and ground.
    • If the test lamp illuminates, test the TCC brake signal circuit for a short to voltage.
  3. If all circuits test normal, replace the stop lamp switch.
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