Thanks guys.

Ron to get it into a reputable shop for a scan honestly takes 4-5 days wait time here. All shops flat out busy. So for now I will try my best to figure it out. I have a hand held code reader at home (seven hours away) lol.

So I warmed the truck up this morning for maybe 4-5 mins and all seemed well again.

But as mentioned above, there does seem to be a "rattle" every now and again when driving before everything is up to operating conditions.

Is there any sure way to tell if a cat converter is on it's way out?

Thanks for the replies guys.