Hello friends,

I hope you have a little time to read this and maybe give some advice on this car. The car is a 99 Bonneville 3.8 K engine.

The history goes something like this. It failed the ILL EPA test in Jan this year for P0420. The owner had a friend p...

FIX posted 7/26/2006

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle