not sure but I believe the Chevy and GMC option packages are slightly different..
my GMC SLE has most of what was available but leather, including left and right 6-way power buckets..
this may be a more accurate comparison;
https://www.gm-trucks.com/forums/top...t-differences/
if you're looking at actual ads that list options, soon you'll have a pretty good idea what was available..
good luck!