I hear you. Leather seating surfaces are not assumed as your butt and back though. A surface can be anything front, back, side etc....
A "surface" is the outside part or uppermost of any layer of something (often used when describing its texture, form, or extent).
The use of leather bolsters is probably due to wear and tear due to entering and exiting a car. I do not think they are outright lying, they are just omitting certain info. If I recall it looks like all the fancy stitched areas of seat are leather (ie Side bolsters of seat and side bolsters of back). I think headrests are leather, at least where the AKG speakers are mounted on front seats. I did not ask GM about the headrests though. Just going off looks.
Based on what GM said, all the parts that are NOT fancy stitched or quilted are leatherette. Not talking about regular stitching. I am talking about fancy stitching and piping on the leather parts. Like the Denali has fractal stitching only on the leather bolsters. The rest is leatherette and not leather.
Leather seats (optional Brandy in Sport and all Sport Platinums )have the quilted leather middle, back, sides... no leatherette anywhere. Standard no cost seats on Sport and below are leatherette with side bolsters in leather.
I called GM about something unrelated and asked. I then followed up via the chat feature on their website. Just passing along what GM told me.
It is crap how they word it and I completely agree. You see what they are calling the 2022 leatherette? Even fancier now...
- Leatherette seats naming convention changed to Interluxe seats
here is an example of Whisper Beige on Sport. You can see where the leatherette is and where the leather is. Looks like front AKG headrests are leather probably due to all the piping needed and 2nd and 3rd row headrests and leatherette. Pretty clear where the leather and leatherette is.
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