I just bought a cadillac cts 2003 97k. cash with no warranty. Some codes came up on the dask and more keep coming up. what do they mean as they are service manual codes and didnt come with a book of course.this is what I got from auto zone C1232, c1233, c1248, c1278, c1298, p1779, p1795 the screen says trans hot oil engine, and I forgot the other. :( Can you please help. I hope I didnt buy a lemon:(