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. Axle Shaft Oil Seal R&R
1.
Raise and suitably support the vehicle.
2.
Remove the front wheel and tire assemblies.
3.
Insert a punch or drift in the cooling
fins of the brake rotor.
4.
Using a breaker bar ...