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Home >> Chevrolet >> 2006 >> Uplander Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Controls - 3.9L - DTC P0011 To P0420) >> DTC P0420 >> Repair Procedures

Repair Procedures

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.