There are 23 choices

• Air Bag
  • (below left hand front seat)
• Body Control (BCM)
  • (under steering column)
    • ID 20815898
    • ID 25835966
    • ID 25892622
• Communication
  • (OnStar, opt UE1)
    • (center dash, behind radio)
      • voice recognition (opt UPF)
      • Without voice recognition
• Door
  • (left hand rear quarter panel)
    • (power liftgate, opt E61)
• Driver Side Assist
  • (below Passenger Side front seat)
    • (park assist)
• Fuel Pump
  • (left hand frame rail)
    • ID 20827745
    • ID 20850927
    • ID 20877116
    • ID 20898936
• Hybrid-Electric
  • (on hybrid battery)
• Memory
  • (under Driver Side seat)
    • Denali
      • ID 20870473
      • ID 25862041
    • Excluding Denali
      • heated and cooled front seat (opt KB6)
      • Without heated and cooled front seat
• Network Gateway
  • (center firewall)
    • (Hybrid)
• Steering
  • (Passenger Side engine compartment)
    • (Hybrid)
• Suspension
  • (rear quarter)
    • MagneRide chassis (opt Z95)
    • real time damping chassis (opt Z55)
• Transfer Case
  • (left hand dash)
• Transmission
  • (next to battery)
    • (auxiliary oil cooler and pump)