48RE for 2005
48RE for 2003/2004 On the 2003 models, check the 8th digit on the VIN #. If it is a C, then the transmission is a HO48RE. If the digit is a 6, then the transmission is a 47RE.
47RE for 2000/2002
47RE for 1999
47RE for 1996/1998
47RH for 1989/1995