Thread: 2002 Z71, 5.3 had code P0135, now P0420
View Single Post
  #2  
Old 08-13-2012, 06:56 PM
gmtech1's Avatar
gmtech1 gmtech1 is offline
AF Enthusiast
  
Join Date: Aug 2011
Posts: 2,001
Thanks: 4
Thanked 303 Times in 301 Posts
Re: 2002 Z71, 5.3 had code P0135, now P0420
Nearly every time I have run into the Cat efficency code, it has required a new cat.
Reply With Quote