Tech2 How do I know my series c g k p?

[Osteoblast]

I hooked up Tech2 (first time, never used it before) and clicking through the menu when it wants to know my series c g k p?
It's a '97 Tahoe 2dr 5.7 V8

 

[Knuckle Dragger]

C= 2wd truck
K= 4WD truck
G=van
P= industrial like a step van