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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 398 (Engine Controls - Self Diagnostics - 4.3L) >> Diagnostic Tests >> DTC P0116: Engine Coolant Temperature Sensor Performance >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 3

    This step tests for excessive resistance in the ECT sensor circuit.

  2. 4

    This step tests for excessive resistance in the IAT sensor circuit.

  3. 5

    This step tests for a skewed sensor through the range of temperatures affecting this DTC.

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