Gmt 900 Front End Clunck

[WTD]

I have an 09 Seirra 1500 with 11,000 miles on it, the problem I have is after the vehicle has been sitting

for awhile and I start out I'll get a slight clunck from the front of the vehicle when making a right hand turn. I can hear the clunck and you can feel it in the gas pedal. After it does it the intial first time

it will not do it again untill after the vehicle has sat for a while. everything is stock on the vehicle

no lift or anything like that, it's a 4X4, I've jacked the vehicle up and cannot find anything loose.

Took it to the dealer they told me it was the ABS brakes intializing, I think thats BS, because the

clunck is to loud, you can feel it in the gas pedal. If anyone has any ideas where to look or what could

be causing this it would really be appreciated.

thanks