I have a sputterig in the engine, it showed a.

Tiny
ANONYMOUS
  • 2006 CADILLAC ESCALADE EXT
  • 121,000 MILES

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?

Monday, March 18th, 2013 AT 1:19 AM

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