WARNING: This page is about a different car, the 2004 Isuzu Ascender. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Power And Ground Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 2: Controlled/Monitored Subsystem References Schematic - 1 of 3
Courtesy of GENERAL MOTORS CORP.
Fig 3: Controlled/Monitored Subsystem References Schematic - 2 of 3
Courtesy of GENERAL MOTORS CORP.
Fig 4: Controlled/Monitored Subsystem References Schematic - 3 of 3