I went up on [...] and looked up your two vehicles. The 1996 trans runs 1996 & 1997 models. The 1999 trans runs 1998 thru 2000 models. Don't know what the difference is, but that's how they are listed. I put a 2001 or 2002 trans in my 1999 Astro. In order to g... Login to read more.