07 Yukon 5.3

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

billyb5755

TYF Newbie
Joined
Aug 22, 2022
Posts
1
Reaction score
0
Got a p0420 and a po430. replaced with new cats still have the 430. replaced all oxygen sensors, still have the 430. No ECM codes vehicle runs great. Scanned vehicle after clearing the 430, everythings spot on. Did a smoke test no leaks anywhere. Had a new MAF out on. After driving about 50 miles trying to get the monitors ready light pops up Po430? Don't know where to go from here. Thanks Billy
 

Forum statistics

Threads
133,741
Posts
1,890,264
Members
99,009
Latest member
Jhawk79

Latest posts

Top