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Home >> Chevrolet >> 2007 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 633 (Shift Interlock System) >> Diagnostic Information and Procedures >> Transmission Control Lever Malfunction (Column Shift) >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2007 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, while pressing the brake pedal, observe the scan tool Brake Applied Output Signal parameter. The reading should be ON with the brake pedal pressed.
  2. Press the brake pedal, the vehicle operator should be able to move the shifter lever out of the park position.