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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (Engine Controls Self-Diagnostics - 4.3L) >> Diagnostic Tests >> DTC P1133: Ho2S Circuit - Insufficient Switching - Bank 1, Sensor 1 & DTC P1153: Ho2S Circuit - Insufficient Switching - Bank 2, Sensor 1 >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. 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. 2

    If the voltage is varying above and below the specified value, the condition is not present.

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