Start by checking the level of hydraulic fluid in the clutch’s reservoir. If the reservoir level is low, fill the reservoir to the recommended level. This may solve any problems that you may be facing with the clutch. Move on to the next step if necessary.
Make the clutch pedal of your Chevy Cobalt engage a position which is lower than the stock position. At this point, check the master and slave cylinder’s lines. Tighten some or all of the necessary lines. If the problem you are facing with the clutch still persists, move on to the next step.
If the clutch of your vehicle does not engage the way it is supposed to engage, locate an 8mm bolt located at the top of the clutch pedal. After you have located the bolt, loosen it just with an 8mm wrench and adjust the pedal by pulling it to the desired position. Tighten the bolt and check if the clutch engages or not. If it does not, try the next technique.
Another possible solution to a problem you may be facing with the clutch of your Chevy Cobalt would be to replace the bolt responsible for establishing a connection between the transmission and the engine. To look properly at the connection, keep the clutch pedal held to the floor by placing an appropriate weight on the pedal. In case the connections separate, you should definitely consider replacing the bolt.
Ask a friend to step on the clutch pedal while you are looking at the rubber portion of the clutch line. If you see the line expanding, that could be the problem with your Chevy Cobalt’s clutch. In such a case, simply replace the clutch line.