46re
The 5.2L was not available in 2003. Its last year was 2001.
2000
No, they do not interchange.
If it is a manual transmission, yes.
2001
It is in the pan.
The automatic does have a fluid pump.
atf+4
46re
The automatic does, yes.
The automatic transmission uses ATF+4
Not correctly. Needs to be a 46RE.