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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (ENGINE CONTROLS - 6.6L - DIAGNOSIS (DTCs P0016-P0401)) >> DTC P003A >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: You must perform the Circuit/System Testing in order to verify the integrity of the TC vane position sensor circuits before proceeding with the Component Testing.

TC Vane Position Sensor

  1. Ignition OFF, remove the TC vane position sensor.
  2. Connect the harness connector to the TC vane position sensor.
  3. Ignition ON, slowly depress the button on the end of the TC position sensor while observing the TC Vane Position Sensor parameter on the scan tool for a smooth decreasing percentage from 100-0 percent without any spikes or dropouts.
    • If the TC Vane Position Sensor parameter is erratic, replace the TC vane position sensor.
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