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Home >> GMC >> 2008 >> Acadia SLT, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel - 3.6L - DTC P0335 To DTC P2138 >> DTC P0420 or P0430 >> Repair Procedures
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Repair Procedures

IMPORTANT: A new converter with less than 100 miles on it may set DTC P0420 or P0430 due to out-gassing of the internal matting. Operating the vehicle at highway speeds for approximately 1 hour may correct the condition.