Yup, that is how you do it. Here is instructions from AUtoZone's website. Just make the tool like I said though, don't buy the tool they tell you is needed.
Here's the link: http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/0c/08/1c/0900823d800c081c.jsp