2006 Cadillac Escalade Ext Repair Question
Asked on March 18, 2013
Cadillac Escalade Ext Engine Problem
I have a sputterig in the engine, it showed a 420 code and indicated the cat, i have replaced them and all O2 sensors. I am still having issues. I have also replaced the mass air. I am at a loss on what to do, I have reset the computer as well. Could it be that i need to have the computer re flashed or replaced?