2016 Sierra DC SLT 5.3 initial thoughts

[flasch192]

Nice truck , I have the exact same 1 , Love the truck put the tranny is a big disappointment , been in once for a relearn and update the ECM/TCM with 1400 miles on it , 1-2 hard shift 2-3 shudder , the thing downshifts like a manual trans when coming too a stop , the whole learn - re learn bit from dealers is such bullshit ! this is my first gm product and may be the last ............