There are 30 choices

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SUBURBAN 1500
- 4x2
  - active brake control (opt JL4)
  - Without active brake control
- 4x4
  - active brake control (opt JL4)
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - Without active brake control
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
SUBURBAN 2500
- 4x2
  - 3.73 ratio (opt GT4)
  - 4.10 ratio (opt GT5)
  - Quadrasteer (opt NYS)
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - Without Quadrasteer
    - 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)
- 4x4
  - 3.73 ratio (opt GT4)
  - 4.10 ratio (opt GT5)
  - Quadrasteer (opt NYS)
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - 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)
  - Without Quadrasteer
    - 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 2003 GMC Suburban

Fits: SUBURBAN 1500 4x4 active brake control opt JL4 4.10 ratio opt GT5 (change)

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