My tranny was slipping from time to time when it was cold, and I got the "update" about two weeks ago. It seemed to fix the problem, but it seemed to shift a little harder the first day or so and then settle down.
Just make an apointment and tell them whats happening and they will give you the "good" stuff to fix the problem.
DP #7384 <p>2002 Silverado LT 4WD Crew Cab<br />Duramax 6600 <br />Allison 5SPD Auto<br />Dark Carmine Red Metallic Paint<br />Graphite Leather Interior<br />Reese 5er Hitch<br />2003 Montana 34\', 5er<br />Banks SS 4\" Monster Exhaust<br />Rino Liner