Yesterday evening while driving through the construction site, I engaged my 4 Hi only to find out a problem. While excelerating from a dead stop (in 4Hi), I heard this awful sound coming from my transfer case. It was a clunk, clunk, clunk sound that happened every time it seemed to rotate around to the same point. I disengaged the 4Hi and the clunk went away once back in 2Hi. Out of curiousity, I engaged it back into 4Hi only to find the problem still exists.

I called my dealer last night to have it looked at today and tomorrow. Any ideas of what might have caused this problem, or what it might be? I'm hoping to God this is going to be covered under warranty.
P.S. I engage my 4Hi at least 4-5 times a week and this just started happening yesterday. I only have 36,100 miles on the truck now. Also, I'm smart enough not to be running 4Hi on the dry roads (I've read all the posts concerning problems with that). Any ideas would help me narrow this problem down. Thanks fellas
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2006 Granite Crew Cab SE 4x4 w/ Big Tow
285/70/17 BFGoodrich All-Terrain T/A KO
AEM Brute Force CAI
Sway-A-Way Coilovers w/ PRG UCA and Sway-A-Way w/ Reservoir Rears
TomTom One XL Navigation
AMSOIL Signature Series 0W-30, 75W-140 Severe Gear and 75W-90 Severe Gear
Magnaflow 18" muffler swap (PN: 12256)
2* Timing Advance
PRG Shackles (
Still need to install these...)