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SUBURBAN 1500
- 4x2
  - 5 lug wheel
    - 3.42 axle ratio (opt GU6)
    - 3.73 ratio (opt GT4)
  - 8 lug wheel
    - 3.42 axle ratio (opt GU6)
    - 3.73 ratio (opt GT4)
- 4x4
  - 6 lug wheel
    - 3.42 axle ratio (opt GU6)
    - 3.73 ratio (opt GT4)
  - 8 lug wheel
    - 3.42 axle ratio (opt GU6)
    - 3.73 ratio (opt GT4)
SUBURBAN 2500
- 4x2
  - full-floating
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - semi-floating
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
- 4x4
  - full-floating (10.5" ring gear)
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - semi-floating (9.5" ring gear)
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)

Rear Axle Assembly for 1997 GMC Suburban

Fits: SUBURBAN 1500 4x4 8 lug wheel 3.73 ratio opt GT4 (change)

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