I have a 2010 Ram 3500 Dually Manual. Just wanted to know if anybody else has the same problem.

If I park the truck and leave it in gear without the e-brake on- it wanders off. Even on almost level ground in a low gear like second, it slowly wanders away about 10 yards.

If it was used in 4x4 I would assume it was transmission wind up but I haven't used 4x4 yet. Any idea's what could cause this???

Thanks