cold air on passenger side 2001 1500K

Has anyone had a problem with cold air seeping in on the passenger side floor on a 2001 1500K chevy truck. There is a cutout under the dash and on cold days the passenger side is too cold to leave feet on the floor.

I have a 2001 silverado with cold air blasts that come in on the passengers side too.I do alot of winter driving in northern canada so if you find a fix ,please reply.

A friend has the same issue, any help????

Wow, two thread hi-jackers in a row...

Try posting in the Silverado forum, as suggested by the "sticky" thread at the very top of the list that says "IMPORTANT: C/K forum is for 1998 and older models. (http://www.automotiveforums.com/vbulletin/showthread.php?t=290553)"

It turns out this is covered in another thread, the search didn't work the first time. There is a TSB on this issue, should this thread be deleted?