There are 23 choices

• SUBURBAN 1500
  • Air Bag
    • (below left hand front seat)
  • Body Control (BCM)
    • (under steering column)
  • 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
    • rear park assist (opt UD7)
      • (below Passenger Side front seat)
  • Fuel Pump
    • (left hand frame rail)
      • integrated trailer brake control (opt JL1)
      • Without integrated trailer brake control
  • Memory
    • (under Driver Side seat)
      • heated and cooled front seat (opt KB6)
      • Without heated and cooled front seat
  • Suspension
    • (rear frame crossmember)
      • MagneRide chassis (opt Z95)
      • real time damping chassis (opt Z55)
  • Transfer Case
    • (left hand dash)
• SUBURBAN 2500
  • Air Bag
    • (below left hand front seat)
  • Body Control (BCM)
    • (under steering column)
  • 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)
  • Memory
    • (under Driver Side seat)
      • cooled and heated front seat (opt KB6)
      • Without cooled and heated front seat
  • Towing Control
    • (left hand middle of frame)
  • Transfer Case
    • (left hand dash)