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Home >> Chevrolet >> 2006 >> Impala LTZ >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays, Gauges And Console >> Diagnostic Information and Procedures >> Tachometer Inaccurate or Inoperative >> Circuit/System Testing

Circuit/System Testing

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, under Special Functions, perform the tachometer gage sweep test.
    • If the tachometer gage does not sweep from its low to high position, replace the instrument panel cluster.
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