It appears the CV joint on the front drive shaft (rear part of shaft, entering transfer case) is going bad. Clicking noise when I turn the front wheels by hand, and a "whirring" sound that varies with vehicle speed when I'm actually driving the truck. I've seen the repair kits (Auto-zone calls it a Driveshaft CV joint and Napa calls it a Propeller shaft repair kit), and was wondering how difficult a job is this? I'm comfortable changing u-joints, wheel hub assembly, etc. Would this be something that's doable? I can't find any directions for it online, not even You-tube. Anyone know?
UPDATE: When I push up on the rear of the front drive shaft where it enters the transfer case, there's a bit of play - probably about 1/8". Seems to me that might indicate the front bearing in the transfer case is bad.
I called my dealership for a quote on replacing the bearing, and the service rep told me it would make more sense to replace the entire transfer case, as Parts & Labor on both jobs were withing $200 of each other, and the case replacement would come with a 3 yr/36,000 mile warranty - whereas the bearing replacement alone would only come with a one year/12000 mile warranty. The price for the transfer case replacement, by the way, was $2300.00. Man, these are expensive toys.