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Crew Cab
- 3.73 ratio (opt GT4)
- 4.10 ratio (opt GT5)
Excluding Crew Cab
- 3.73 ratio (opt GT4)
- 4.10 ratio (opt GT5)

Front Axle Assembly for 2003 GMC Sierra 1500 HD

Fits: Excluding Crew Cab 3.73 ratio opt GT4 (change)

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