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Home >> Chevrolet >> 2006 >> TrailBlazer 4.2 S, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.2L - DTC P0420 To P1682 >> DTC P0442 >> Repair Procedures

Repair Procedures

IMPORTANT: The Malfunction Indicator Lamp (MIL) may remain ON after the repair unless the DTCs are cleared.

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