Question

1999 Chevrolet Express 5.7L with engine code P0430 and have all new parts. Need help please help

Answer 1

Hi there

This code points to an issue with the catalytic converter on bank 2. There are a lot of possible causes for this.

Here is a list of them.

P0430 CHEVROLET - Catalyst System Low Efficiency Bank 2
Read more: https://www.autocodes.com/p0430_chevrolet.html