Thanks for all the help, this forum is better than the mechanic at the dealership. They wanted to replace ALL oxygen sensors at 1K. I went to Oreillys auto parts store and had them read the code. Purchased one oxygen sensor for post cat bank 2. Replaced it and the light came back on. Was going to switch it to the other side when I found the crack in the cat. Had a local take the exhaust down and weld the cracked cat and found that the passenger side cat was craking also. Welded it and the light hasnt came on since. Thanks for ALL your help....almost looking forward to the next problem!!