The first diagram IMO is totally whacked because it says 97 GTP. All 97 GTP's should (key word as 97 might have had one or two 4T60's) have only had a 4T65 trans in the GTP or Supercharged model. The 4T65 trans is fully electronic and doesn't need vacuum for anything. The 4T60 aka predecessor trans used vacuum.

so no.. no vacuum to the trans.