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Model	Years	Speeds	Drive Train	Trans Model

Astro	1985-1992	4 Spd	RWD L4 2.5L, V6 4.3L	TH700-R4, 4L60
Astro	1993-1994	4 Spd	RWD L4 2.5L	4L60E
Astro	1993-2005	4 Spd	RWD V6 4.3L	4L60E