this is my first post to this site so be gentle. This is not even my car but my girlfriends car, you know not mine but responsible to change oil, fix and pay for everything basically. Anywho long story short.
A ways back the CEL came on and she brought it to her brother who is an auto mechanic, he pulled the code and it was a shot catalytic converter. So instead of installing the OEM cat he opted for the cheaper high flow. He didn't use any gaskets either, high temp sealant. So now a couple of months down the road the CEL came back on and I scanned with my edge insight and the code was catalytic related, something about difference between O2 sensors. Her brother claims that she isn't driving it hard enough and blah blah. I was getting sick of him giving me the run around. So I brought it to another friend or works at a GM dealer and he hooked it up to the computer and basically said that the high flow cat is tripping the CEL, basically replace with OEM if you want the light to stay off.
So I would like to know how hard this is to replace with no lift? Is there a how to with some pics somewhere on this site?
I am in alaska at the moment so I can't pull the CEL code at the moment.