How do you remove the handle from the dash of a 2000 silverado changing the heater core?

If you have already removed the passenger's air bag, you will see two long metal rods holding it on. On the inside of the dash, at the beginning of these two post, there is a small black square piece with a white strip on the side. This strip is actually a clip. Press in on the white strip while pulling on the handle. This takes two people. One to press on both clips and one to pull REALLY HARD on the handle to slide it out.