Results 1 to 1 of 1
04-28-2012, 02:30 AM #1
- Join Date
- Apr 2012
2003 5.3 Z-71, 48k miles. Just popped p0420 after battery went dead.
My Avalanche doesn't get driven alot and this past week I found the battery was completely dead. I jump started it and drove it and all was fine. Now twice it's thrown a P0420 code for Converter Efficiency.
I had to replace the Bank 1 O2 Sensor about 6 months ago due to a failed heating element.
Other than that this is the only issue I've had.
Before I go drop a $1500 on coverters on a vehicle that doesn't even have 50,000 miles on it I am looking for some advice.
Any help would be appreciated.
---------- Post added at 03:30 AM ---------- Previous post was at 03:28 AM ----------
Also.. I've owned the vehicle since it was new and it has been well maintained and hasn't had any fuel additives or anything else put in the fuel system that would contaminate the converters.
By Cobrasix in forum General Chevy & GM Tech QuestionsReplies: 3Last Post: 02-05-2012, 10:50 AM
By denn454 in forum GM PowertrainReplies: 3Last Post: 04-09-2011, 01:11 PM
By coppcarz in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)Replies: 9Last Post: 12-12-2010, 01:30 AM
By loic in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)Replies: 7Last Post: 08-31-2009, 07:01 PM
By vegaschevy in forum Chevy Silverado Forum (GMC Sierra)Replies: 13Last Post: 02-23-2009, 08:27 PM