Hmm, it seems like you might be referring to torque steer, where the car pulls to one side (happens in FWD cars because of all the weight on the front wheels). I'm referring to when I pull out of a spot really slowly and then I tap a little harder on the pedal and then it sorta jerks as it accelerates, it might just be because I press the pedal a little harder.

mine is very slow off takeoff

yet my brother'* GP fly like a bat out of hell

gm also uses alot of "torque management" in the newer vehicles, hard to tell sometimes unless you drive two of the same vehicles back to back. we had two 6.0 gas 2500 hds at work almost the same config, same engine same gears same tires one was a 03 one was a 06. the 03 was a rocket off the line but the 06 couldnt even spin the tires. the power feels the same after 1st to second shift. imsure its gms way of saving warranty money