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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 865 (Instrument Panel System Displays And Gauges) >> Diagnostic Information & Procedures >> DTC P2066 >> Circuit/System Testing

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, remove the secondary fuel level sender and verify that there is no obstructions interfering with the fuel level sender.
    • If interference is present, remove the obstruction.
  2. If no interference is present, replace the secondary fuel level sender.
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