Transmission Problem

[Warrior68]

I've had my new sierra for a week now, just about 150 miles. I've noticed that the transmission shifts hard going into 2nd and 3rd gear, not really a big deal. What really bothers me is that about 4 times now, after backing out of my driveway and placing the vehicle into drive, the transmission has a difficult time shifting into second gear and bucks 4 or 5 times before the shift like its struggling to accelerate properly. Anyone else heard of or experienced similar issues?????

[20L8TSierra24]

http://www.gm-trucks.com/forums/topic/157944-transmissions-issuesproblems/page-6?do=findComment&comment=1460394

Probably answers your question here

[jvcjbl]

Took mine on the beach the other day and it was bucking and hopping so bad I damn near got stuck. I mean for f*cks sake I was getting passed by cars on the sand highway and here I am bouncing and bucking just trying to take off. Something isn't right with this at all.

[sourdough44]

Some serious bucking and hopping isn't right, hopefully some codes pop up for the dealer to look into. I'm approaching 1000 miles with no adverse issues.