There is no separated module on Jazz/Fit the locking and unlocking features are built in the Instrument Cluster.
However you can install a remote locking unit and probably you'll need the signals for locking and unlocking. This can be found on the fusebox.
The problem is... GD has two fusebox types, and here in Brazil is a mess because the Year/Model does not match the global (European/Japanese) models and forget the US model, it's another fusebox as far as i know.
Early Model (GD)
On this model the signals are on the 13 connector, I can check later which pins...
Newest Model (GD)
If you can confirm which model is your fuse box I think I can help more.
Also can you post the model or installation instructions of the remote locking unit?