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SUBURBAN 1500
- AWD
  - opt NP3
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - opt NR3
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
  - opt NR4
    - 3.73 ratio (opt GT4)
    - 4.10 ratio (opt GT5)
- Without AWD
  - 3.73 ratio (opt GT4)
  - 4.10 ratio (opt GT5)
SUBURBAN 2500
- 3.73 ratio (opt GT4)
- 4.10 ratio (opt GT5)

Front Axle Assembly for 2003 GMC Suburban

Fits: SUBURBAN 1500 Without AWD 3.73 ratio opt GT4 (change)

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