The driver's seat height adjuster is located on the outboard side of the seat.
To raise the seat, move the lever upward repeatedly until the seat is at the desired height. To lower the seat, move the lever downward repeatedly until the seat is at the desired height.
Chevrolet Cobalt Service & Repair Manual. Valve Cover, Replace
Removal
1.
Loosen vent hose clamp at air cleaner
resonator, air cleaner intake duct clamp at air cleaner outlet resonator.
2.
Loosen air cleaner outlet resonator
to throttle body clamp, located forward of accelerator cable bracket ...