Air draft on passenger flloor.

I have noticed cold air blowing on the passenger's floor board. The left side of the passenger's floor board has warm air blowing while the heater is on, but the right side has extremely cold air coming in while driving. Any thoughts about what I can look for to correct this?

judgeroy;

Welcome to AF! It would help people a lot if you told them what year/engine your suburban is. No doubt someone has had this issue before. This one is new to me but I'd guess you could have an outside air vent that is stuck open. Since you have warm air on one side and cold on the other I'd suggest driving around for a bit with the heater on high, then park the rig and reach around up forward of the floorboard area on the passenger firewall/sidewall; when you find the coldest spot you'll know you are in the right area.

I have the same problem on an 01 Tahoe. Has anyone found the problem????

I think this is what you're looking for. I still haven't tried it yet.

http://www.automotiveforums.com/vbulletin/showthread.php?t=481128

(I wish the Yukon/Tahoe/Suburban forums would merge)