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| Model | Years | Speeds | Drive Train | Trans Model |
| Sierra 2500 | 1995-99 | 4 Spd | 4.3L, 4.8L, 5.0L, 5.3L, 5.7L, 6.0L | 4L60E |
| Sierra 2500 | 2000-03 | 4 Spd | RWD, 4WD 4.3L, 4.8L, 5.0L, 5.3L, 5.7L, 6.0L | 4L60E |
| Sierra 2500 | 2000-03 | 4 Spd | 6.5 Diesel | 4L80E |
| Sierra 2500 | 2000-03 | 4 Spd | 5.7L, 6.0L, 7.4L, 8.1 L | 4L80E |