I got the following info via PM from trackers55. Unfortunately I don't have the 15% coupon. However, I received 10% amount of Sears points coupon via email, so check your Sears emails. I was hoping that I can applied both coupons...
It should be in your shop your way rewards acct on sears.com go to the top and click on coupon deals then you should see a coupon for 15 percent off and click on it to apply it
The 15 percent coupon code is in the coupon deals in your acct. it's on the right hand side last one, you have to click apply on it.