chirping around t-case

my 98 ZR2 blazer just started chirping going forward and backward at low speeds.  It sounds like its coming from the transfer case but im not sure.  would anyone no what this problem is?  thanks

Most likely it is caused by a dry universal joint in one of the driveshafts.  If it does it in both 2wd and 4wd, then it is the rear driveshaft.  If you definitely have it localized to near the transfer case, then it probably is the front joint.  I would remove the rear driveshaft and have a look at the universal joints.

The stock cups are held in by injected nylon which must be heated while in a press for removal.

thanks ill try to get to that asap.  i also have a little problem with leaking on the back right window.  would i have to go to a dealer to get that fixed or is there a way i can patch it.  thanks