Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2009 >> TrailBlazer 4.2 S, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - DTC P0366 T0 DTC P2544 >> DTC P0420 >> Repair Procedures

Repair Procedures

NOTE: A new converter with less than 100 miles on it may set DTC P0420 due to out-gassing of the internal matting. Operating the vehicle at highway speeds for approximately 1 hour may correct the condition.
scientia non olet · About Mike's Workshop Manuals