July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Local Interconnect Network (LIN) Bus (1 of 2) (CZ2)
WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Local Interconnect Network (LIN) Bus Wiring Schematic (1 of 2) (CZ2)