In addition to the trunk release button on the Remote Keyless Entry (RKE) transmitter, the trunk can be opened from inside the vehicle by pressing the remote trunk release button. This button is located inside the driver storage compartment, on the left side of the instrument panel.
See Trunk.
Chevrolet Cobalt Service & Repair Manual. Door Handle
Exterior
Front
1.
Remove front door trim panel as outlined
in "Door Trim Panel."
2.
Remove front door water deflector.
3.
Remove three front door handle retaining
screws, Fig. 1.
...