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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 361 (ENGINE CONTROLS - SELF-DIAGNOSTICS - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline) >> Diagnostic Tests >> DTC P0125: Excessive Time To Enter Closed Loop Fuel Control >> Test Description

Test Description

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2003 Hummer H2, 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 GMC Sierra, and 2003 GMC Cab & Chassis Sierra. 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 procedure.

  1. 3

    This step tests for excessive resistance in the ECT circuit.

  2. 7

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

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