As far as I can tell, these are the current slogan/taglines for the GM products in the US:
Chevrolet - An American Revolution
Pontiac - We Build Excitement (is this still Pontiac's slogan?)
Saturn - A Different Kind of Car Company (not used in the current Saturn website, but I couldn't find a newer one if there is a new one)
Buick - Beyond Precision
Cadillac - Break Through ( was Standard of the World for many, many years)
GMC - We Are Professional Grade
Saab - Born From Jets
Isuzu - ???????
What do you think? Are these great, or do you have better suggestions?