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2.7 Turbo (310 Hp) 4WD Automatic 3.0 Duramax TD (277 Hp) 4WD Automatic 3.0 Duramax TD (305 Hp) 4WD Automatic 5.3 V8 (355 Hp) 4WD Automatic 6.2 V8 (420 Hp) 4WD Automatic AT4 3.0 Duramax TD (277 Hp) 4WD Automatic AT4 6.2 V8 (420 Hp) 4WD Automatic