02-21-2011, 11:36 PM | #1 |
Registered User
Join Date: Jan 2007
Location: pittsburg kansas
Posts: 894
|
po420 and po430
96 yukon, 4x4, 5.7l.
Its throwing a po420 and po430code. the po420 pops up about every 60 miles or so. the po430 just came up for the first time today. I know its cat efficiency low. What are some possible causes? Good starting test procedures? Any common problems associated with these codes and trucks? Thanks in advance |
Bookmarks |
|
|