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Model	Years	Speeds	Drive Train	Trans Model

Silverado HD	2007-2016	6 Spd	RWD, 4WD V8 6.6L 8.1L	LCT-1000 ALLISON
Silverado HD	2007-2016	6 Spd	RWD, 4WD V8 6.0L	6L90