The vehicle may have an up-shift light.
When this light comes on, shift to the next higher gear if weather, road, and traffic conditions allow.
See Manual Transmission Operation for more information.
Chevrolet 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 ...