2006 GMC Envoy Q&A

2006 GMC Envoy Question: would the catalytic converter call the check engine to come on

i charge my spark plugs -
Answer 1
Yes , a failed converter would. Recommend having the CAUSE of the failure diagnosed first before wasting money on a converter and still having problems. Post codes for further advice. -
Comment 1
rec. fuel system clean. ethanol treatment to 1 tank premium fuel. ethanol blend in fuel causes build up in fuel system, combustion chambers and exhaust system. this build up can trip sensors. -
Answer 2
have codes scanned and post so we can adv, could also be failed o2 sensor -