Some 2005-09 GX470 and 2006-07 LX470 SUVs may illuminate the check engine light and store one or more of the following air injection system trouble codes in the PCM: P0412, P0418, P1440/P1443, ...

Interpreting date codes, how to de-vein your GM smog pump and how to delete the smog pump on a C4 Q:Over the last several months I have acquired numerous questions regarding smog systems, including ...

Q:I am a first-time Corvette owner and have recently subscribed to the magazine. Being a hands-on owner, I love all of the how-to articles the magazine has to offer. I am the proud owner of a C5 ...

An emission control device on some engines that pumps air into the exhaust system so the catalytic converter can "reburn" pollutants in the exhaust. The air pump pumps compressed air into the exhaust ...