Canadian Hummer Club Forums

Seems that my B2 catalytic converter is working on a low efficency. Is it true that it is one of the few parts that I have to get from the dealer? Code I am getting is P0430



So as for the wanted post here. Does anyone have one in the magic bag of tricks?

My cats where plugged up last year and throwing that code. I had them both replaced (if one is plugged, the other is likely close) with after market high flow cats. Also replaced a bad O2 sensor, and that fixed up the engine light. After a few more minor parts (anti knock sensors and evap vent) and a professional tune from MGS Custom, and I haven't had my engine light on for months! Love it! <img src='http://www.canadianhummerclub.com/forum ... ght_on.gif' class='bbc_emoticon' alt=':right_on:' />

Thanks, I would look doing just that. I hate that engine light staring at me! Drives me crazy and its a short trip!

Steve at Master MEchanic did mine a few years back..same time i did my exhaust....well worth it...the one cat is on an elbow.. it causes issues...