Hey guys, I recently picked up an 06 quad cab dakota slt. I noticed there is shuddering of the whole truck ONLY when I'm going up a steep incline in reverse and ONLY in 2k RPM only. I usually press the gas pedal to go up the hill faster with no vibration. Does anyone else truck do this? The truck needs to reach 2k RPM before the truck starts shaking....once you pass 2krpm then it's ok. It does not do it on level ground.