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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1368 (Engine Controls And Fuel - 4.3L - DTC P0016 To DTC P0336) >> DTC P0128 >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the ECT sensor terminals for corrosion, and for engine coolant leaking through the sensor.