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Home >> Hummer >> 2008 >> H3 Base, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Shift Lock Control) >> Diagnostic Information and Procedures >> Transmission Control Lever Malfunction >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON, vehicle in PARK, observe the scan tool TCM TR SW parameter. The parameter should indicate PARK.
  2. Observe the scan tool TCM Brake Switch parameter while pressing and releasing the brake pedal. The parameter should change between Applied and Released.