my van failed nj inspection for emissions and check engine light. on 2007 Chevrolet Uplander

A mechanic replaced cat converter, oxygen sensor and I replaced the gas cap. Still the engine light comes back on.

by in Bridgeton, NJ on February 14, 2013
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
3 answers
ANSWER by , February 14, 2013
Get the code read and post on here to assist you. Autozone does this for free.
ANSWER by , February 14, 2013
what are the codes you have?
ANSWER by , August 04, 2014
when was the last time you changed plugs and wires they do last longer than in the old days but not forever