Anyone know what this is??

It seems every time I look at this car I see something new!

I was changing my oil today, so I figured since I threw that CAT code, I would look at my exhaust system while I was down there.

So I see this thing, looks like a boot of some sort apparently broken... I have no idea what it is...

Any help greatly appreciated!:confused:

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It is your evaporator condensate drain tube-when the a/c is on and it is humid- water drips out- Notice the slot in the end- only GM W cars (yours) has the slot- all others are wide open- this can cause your drain to plug up- so I always cut the slot opening off when I see one. t is slotted by design to prevent massive air flow loss out the drain hole turn your blower motor on high- you'll feel the air flowing out.