WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Main Power Contactors Circuit Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 2: Drive Motor Generator Power Inverter Module Power & Data Communication, High Voltage A/C Compressor Control Circuit Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 3: Accessory DC Power Control, Hybrid Power Steering Circuit Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 4: High Voltage Interlock Circuit (HVIC), Contactor Control Circuit Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 5: Drive Motor With Generator Assembly Circuit Schematic - 1st Position
Courtesy of GENERAL MOTORS CORP.
Fig 6: Drive Motor With Generator Assembly Circuit Schematic - 2nd Position
Courtesy of GENERAL MOTORS CORP.
Fig 7: Transmission Pump & Range Signals Circuit Schematic