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Model	Years	Speeds	Drive Train	Trans Model

Avalanche	2002-06	4 Spd	8.1 L	4L80E, 4L85E
Avalanche	2002-09	4 Spd	5.3L	4L60E, M30
Avalanche	2007-08	4 Spd	5.3L, 6.0L	4L70E, M70
Avalanche	2009-10	6 Spd	5.3L, 6.0L, 6.2L	6L80