So I started driving and I notice a "clanging" sound coming from my left front side of my truck. This increased with speed until I was going fast enough not to hear it. (25mph+) Also decreased with speed to a complete stop, and stop the noise. I was able to look under my vehicle and notice that the rubber casing protecting the axel to the wheel well on the left axel was totally blown out. I am assuming this the CV boot. Axel is exposed and grease is dripping out. With a little bit of research I'm assuming that the clanging noise can be due to sand and grit getting into the wheel well. I am wondering how much approximately this will cost to fix, and if it is possible to do myslef with simply tools and a jack? I have 4wd all the time. Thanks for your help!