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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 989 (Engine Controls Diagnosis - 4.3L (DTCS P0641-P1381)) >> Diagnosis >> DTC P1133 or P1153 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The PCM detects that the affected HO2S lean-to-rich or rich-to-lean transitions are less than a calibrated value.

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