Okay, I've had my 2000 Monte Carlo SS for about a year and a half. It has caused nothing but problems, I've replaced the water pump, radiator, hoses, ac compressor, and just recently the catalytic converter. I was getting the catalytic converter below threshold code and all of the o2 sensors. Today I went to advance auto parts and it gave me P 0410, p 0306, p 0241. I'm so sick of not knowing what's wrong with my car and I'm a girl so everybody tries to tell me its something else but its not and I know a lot about cars but I'm at wits end. Any information would be helpful thank you. She has about 166650 miles.

 

Ms. 420, I have quickly checked those codes and it looks like you may need an ignition tune-up (plugs/wires and/or coils), a new O2 sensor, which should have been replaced when the converter was, and possibly a rebuilt AIR pump and/or the one-way check valve...

BTW, have you tried "zombie haze"? enjoying it now...teeheee