
RULE#1 - Don't turn it upside down
Seriously, the vehicle break in period is almost a non event for an Av. The main consideration in GM's suggested plan is not to exceed 55 mph for the first 500 miles, vary your speed (don't set it on cruise and forget it) and TRY not to emergency brake until that period is over. Basic common sense. The only thing I would add is to do a fluid check more often than normal, and cycle every operating system to check all the functions ( A/C, heat, trailer mode, etc.) so you don't have any surprises on the road.
Most of all, ENJOY!
Jake