2007 Chevrolet Uplander Q&A

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

A mechanic replaced cat converter, oxygen sensor and I replaced the gas cap. Still the engine light comes back on. -
Answer 1
Get the code read and post on here to assist you. Autozone does this for free. -
Answer 2
what are the codes you have? -
Answer 3
when was the last time you changed plugs and wires they do last longer than in the old days but not forever -