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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 P0128 >> Component Testing

Component Testing

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Measure and record the resistance of the ECT sensor at various ambient temperatures and compare those measurements to the Temperature vs. Resistance table. Refer to Temperature vs Resistance (ECT Sensor) or Temperature vs Resistance (IAT Sensor) or Temperature vs Resistance (IAT 2 Sensor) or Temperature vs Resistance (Fuel Temperature) .