It happend twice after sitting a day, when first moving the truck either forward or reverse I felt and heard a loud bang and the truck felt like it stopped ( of coarse I hit the brake so fast when I heard the sound), I then proceded to go again with no problem.It felt like either something in the rear diff. or like one of the back wheels applied the brake to it. Brake are all new, always maintained, no abuse given to the truck. Any similar problems or sugguestions. Runs fine. Thanks

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98 E430(sport), 99 ML 320 (sold) , 05 C 230(sport) Mark