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SILVERADO 1500 PICKUP
- 8.6" ring gear (3.42 ratio, opt GU6)
  - locking differential (opt G80)
  - Without locking differential
- 9.50" ring gear
  - AAM built (opt SU7)
    - 3.23 ratio (opt GU5)
    - 3.42 ratio (opt GU6)
  - GM built (opt SU8)
    - 3.23 ratio (opt GU5)
    - 3.42 ratio (opt GU6)
- 9.75" ring gear
SILVERADO 2500 PICKUP
- 3.42 ratio (opt GU6)
- 3.73 ratio (opt GT4)
SILVERADO 3500 PICKUP
- dual rear wheels
  - Chassis Cab (without box)
    - Without wide track
      - 3.42 ratio (opt GU6)
      - 3.73 ratio (opt GT4)
    - wide track (opt GTY)
      - 3.42 ratio (opt GU6)
      - 3.73 ratio (opt GT4)
  - Pickup (with box)
    - 3.42 ratio (opt GU6)
    - 3.73 ratio (opt GT4)
- single rear wheels
  - 3.42 ratio (opt GU6)
  - 3.73 ratio (opt GT4)

Rear Axle Assembly for 2021 Chevrolet Silverado

Fits: SILVERADO 3500 PICKUP dual rear wheels Pickup with box 3.42 ratio opt GU6 (change)

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