Boot is torn, makin noise, clicking when i turn

I'm going to assume that the Yukon is a 4X4, and will therefore also assume that the clicking noise is coming from one of the two drive axles (likely the right side). Check under the truck near the wheels and you will see the drive axles with a rubber bellows boot on either end. It is likely that the boot closest to the wheel has torn and allowed the grease to escape the constant velocity (CV) joint. The boot or possibly the axle will have to be replaced.

I'd say constant velocity joint. It's been my experience that the offending side is usually opposite from the direction being turned. Turn the wheel to each extreme side and get a look at the c.v. boots. If it's ripped or torn it's a good indication that foreign material has entered it and caused excessive wear. If I've helped, please rate my assistance. Thank you and Happy Holidays.

Drive axle in front

A clicking noise heard especially while making a turn is most likely a CV (constant Velocity) drive axle(s) that is worn out, and if the CV boots are torn and dirt has been getting into the drive axle CV joint, then replace the CV drive axle assembly and do not have the drive axle re-built or re-booted, especially when you can purchase a complete new CV axle assembly for under $60.00 and here is a link to check one out.

http://www.familycar.com/store/item/Chevrolet_Malibu_Replacement_Axle-Assembly_1997_2003_ARBC507101.html

It is the drive axles. If you look under your ca you will see that the shafts going to your wheels have rubber boots to protect the bearings. They are most likely torn and the bearings have become dirty and contaminated. Replace the drive axles and the clicking will go away!

check your cv axles in the front end. they are basically your drive axles. the popping while turning is usually the outer boots on the axle shafts have torn and the grease inside the boots has ran out causing the shaft to be dry and click or pop when steering. usually you can replace the boot thats torn but it must be done within a few days of it tearing otherwise you will need to replace the axle shafts.

Usually that is the sign of a cv joint going. I have an accord with front wheel drive and it did the same thing. THe cv boot being torn could have caused the initial breakdown of the bearing faces...

If something off the road tore the boot, yes but if it has not been tore long and you don't hear any clicking noises around corners, you can just replace the boot.

CV Joint Axle Replacement - How to Repair or Replace

Over time the rubber boots of the CV joints can become cracked, torn, or otherwise compromised. Once moisture and dirt get into a CV joint and grease makes its way out, the CV joints days are numbered. Signs of impending failures are a click-click-clicking or metallic crackling noise while turning and accelerating or a clunking upon deceleration. While one can repack, reboot, and rebuild CV axles, it makes more sense for the average do-it-yourselfer to procure replacement units and swap out the old axles. If a boot is torn or missing, it is possible to save the joint if caught early enough, but usually the damage has already been done. Replacing or servicing the entire CV joint axle assembly may be the smarter move since replacing a boot may involve removing an axle, which may also involve removing half or all of the vehicle's brakes and suspension.

on this type of vehichle, you have two axles in the front; one going to each side. Chances are that the boot at the axle joint was torn and that is why you are having problem. In teh past people used to replace the boot, this day and age its actually cheaper to replace the axle. So you would need to replace that side of the axle (the half shaft).