General Motors Vehicle Assembly Structure (or GM VAS)

[UserXX]

Hey GM Engineers,

Can anybody provide for me the GM VAS, and how it breaks down?
I performed keyword searches and internet searches with no luck.

I know that VPPS LEVEL 1 is 10 major systems: Powertrain, Powertrain Integration, Chassis, HVAC & Powertrain Cooling, Interior, Body Structures, Body Closures, Exterior, Information & Controls, & Electrical Function.

I am looking for VPPS LEVEL 2, the 58 major subsystems. Do you have info you can post here, or know of a website?

Your help is appreciated. Thank you...