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SIERRA 1500 PICKUP
- 4.3L
  - (8.6" ring gear, 10 bolt)
    - 3.23 ratio (opt GU5)
      - (4x2)
    - 3.42 ratio (opt GU6)
      - (4x4)
- 5.3L
  - 3.08 ratio (opt GU4)
    - (9.5" ring gear)
  - 3.23 ratio (opt GU5)
    - (9.75" ring gear)
  - 3.42 ratio (opt GU6)
    - 9.5" ring gear
    - 9.75" ring gear (opt NHT)
  - 3.73 ratio (opt GT4)
    - (9.75" ring gear)
- 6.2L
  - (9.75" ring gear)
SIERRA DENALI 1500
- 5.3L
  - (3.42 ratio, opt GU6)
    - 9.5" ring gear
    - 9.75" ring gear
- 6.2L
  - (9.75" ring gear)
    - 3.23 ratio (opt GU5)
    - 3.42 ratio (opt GU6)

Rear Axle Assembly for 2018 GMC Sierra 1500 HD

Fits: SIERRA 1500 PICKUP 5.3L 3.23 ratio opt GU5 9.75 ring gear (change)

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