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.
Door Locks
WindowsChevrolet Cobalt Service & Repair Manual. Crankshaft Rear Oil Seal R&R
Removal
1.
Remove transaxle.
2.
Remove flywheel or flexplate.
3.
Remove crankshaft rear oil seal using
suitable flat bladed tool.
4.
Reverse procedure to install.
...