Thank you.
I went oreilly and requested to check memory code. His answer was without CEL He can't check. after 2nd request he connected and shows P0420 Bank 1. I don't think Cat goes bad this early at 138,000. Well, Presently no light and i am going put so many miles tomorrow, see what happens. usally CEL light come back 50-100 miles correct?
Again, Thank you.