2003 GMC Sierra 1500 equipped with 6.0L V8 Gas OHV, 5.3L V8 Gas OHV, 5.3L V8 Flex OHV, 4.8L V8 Gas OHV, 4.3L V6 Gas OHV
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8.5 In., 8.625 In., 8.75 In., or 8.875 In. Ring Gear
2003 GMC Sierra 1500 equipped with 6.0L V8 Gas OHV, 5.3L V8 Gas OHV, 5.3L V8 Flex OHV, 4.8L V8 Gas OHV, 4.3L V6 Gas OHV
8.5 In., 8.625 In., 8.75 In., or 8.875 In. Ring Gear