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Home >> GMC >> 2003 >> Envoy RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 4.2L >> System Tests >> Malfunction Indicator Light Always On >> Test Description
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Test Description

The number below refers to the step number in the diagnostic procedures.

  1. 2 -  This step determines if the condition is with the MIL control circuit or the PCM.

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