Engine Performance problem
1998 Chevy Silverado V8 Two Wheel Drive Automatic 177000 miles
I HAVE 2 CODES FOR MY TRUCK. THEY ARE:
P0420 AND P0430
Catalyst System Efficiency Below Threshold (Bank 1)
Catalyst System Efficiency Below Threshold (Bank2)
Can you tell me what needs to be done to correct these codes? I had a new Catalytic Converter installed 1 year ago. Thanks for your help.
Saturday, March 8th, 2008 AT 7:54 PM