[jblackburn]

4.

3 trans, 1 engine (by serpentine belt)

https://www.gmpartsdirect.com/auto-...and-trans-mounting-scat/?part_number=13347453

 

[jblackburn]

One more question.

If I buy a replacement mount, do I need to buy a bracket with it or can I use the existing one?

Believe the bracket should be fine (unless damaged by a crash)

That said, it is unusual for them to have gone bad already. Are you after some sort of vibration or harsh shifting?