Looking for some help. My service light was on in my car last week along with my oil light. I took my car in, got an oil change and both lights went off. I went out today to start up my car and my service light came back on. I took it to Auto Zone and had them hook it up to their code reader. They gave me the printed list of the codes of what's wrong but I wanted to see if I upload a picture of the codes if someone mechanically inclined could just tell me the parts I need to go buy for my car and how many of each in specifics. This might sound silly, but I'm a single mother and have no knowledge of what I'm doing but want to know what I'm looking for and possibly a mechanic that would fix these for a decent price. (This is for an 02 awd Pontiac aztek) TIA.