Fits these vehicles with these options:
AVALANCHE 1500 02-04 3.73 ratio (opt GT4)
SIERRA 1500 PICKUP 01 exc. crew cab; 3.73 ratio (opt GT4), exc. C3
SIERRA 1500 PICKUP 02-04 exc. crew cab; 3.73 ratio (opt GT4)
SIERRA 1500 PICKUP 04 crew cab, 6 lug wheel, 3.73 ratio (opt GT4)
SIERRA 1500 PICKUP 05-06 6 lug wheel, 3.73 ratio (opt GT4)
SIERRA 1500 PICKUP 99-00 3.73 ratio (opt GT4)
SILVERADO 1500 PICKUP 01-02 exc. crew cab; 3.73 ratio (opt GT4)
SILVERADO 1500 PICKUP 03-06 exc. crew cab; w/o AWD; 3.73 ratio (opt GT4)
SILVERADO 1500 PICKUP 04-06 crew cab, 6 lug wheel, 3.73 ratio (opt GT4)
SILVERADO 1500 PICKUP 99-00 3.73 ratio (opt GT4)
SUBURBAN 1500 00-02 (6 lug wheel), 3.73 ratio (opt GT4)
SUBURBAN 1500 03-04 w/o AWD; 3.73 ratio (opt GT4)
SUBURBAN 1500 06 3.73 ratio (opt GT4), w/o AWD
TAHOE 00 Silverado style, 3.73 ratio (opt GT4)
TAHOE 01-02 3.73 ratio (opt GT4)
TAHOE 03-04 w/o AWD; 3.73 ratio (opt GT4)
TAHOE 05-06 3.73 ratio (opt GT4)
YUKON 00-02 exc. Denali; 3.73 ratio (opt GT4)
YUKON 03-04 w/o AWD; 3.73 ratio (opt GT4)
YUKON 06 3.73 ratio (opt GT4), w/o AWD
YUKON XL 1500 00 3.73 ratio (opt GT4)
YUKON XL 1500 01-02 exc. Denali; 3.73 ratio (opt GT4)
YUKON XL 1500 03-04 w/o AWD; 3.73 ratio (opt GT4)
YUKON XL 1500 06 3.73 ratio (opt GT4), w/o AWD
TUG UL2 US9 WH1 ZXN
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