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Model Years Speeds Drive Train Trans Model
Silverado 2500 1998-2003 4 Spd RWD, 4WD 4.3L, 4.8L, 5.0L, 5.3L, 5.7L, 6.0L 4L60E
Silverado 2500 2000-03 4 Spd 6.5 Diesel 4L80E
Silverado 2500 2000-03 5 Spd 8.1L, 6.6L Diesel ALLISON 1000
Silverado 2500 2000-07 4 Spd RWD, 4WD 5.7L, 6.0L, 7.4L, 8.1 L 4L80E
Silverado 2500 , 2500HD 2004-05 5 Spd 8.1L, 6.6L Diesel ALLISON 1000
Silverado 2500 , 2500HD 2004-07 4 Spd 6.0L 4L80E, LQ4
Silverado 2500 , 2500HD 2006-10 6 Spd 8.1 L, 6.6L Diesel ALLISON 1000
Silverado 2500 , 2500HD 2007-10 6 Spd 6.0L 6L90, LY6, L96