Cobalt 2008 - weak batarry

How about having the starter checked out? The armuture, brushes or bushes might be on its last. Causing the starter to pull alot of current. An auto electric shop will do a 5minute check on it. Called a load test.

change the batteries.

clean with brush and put back.

This can happen if the battery is low / dead. To solve, connect a set of jumper cables between the battery in the Cobalt and a running car's battery. Shut off the running car. In the Cobalt, make sure all accessories (lights, radio, fan, etc.) are off. Step on the brake, then move the gear shifter fully into the PARK position. Next, either attempt to start the engine, or turn the key to the OFF position and remove it from the ignition.

I hope this helps & good luck!

Try jumping/boosting the vehicle, all of the above will still work with a weak/low battery but the starting system takes a lot of amperage to turn over the engine. If you only left the keys in the car and no lights on or anything running why would it not start if it was starting correctly before??? Whats happened since the car was last started?

remote giving problems..I put a little square of paper on battery..seems to give it a bettter conection

The battery in the remote may be getting weak, try having the battery replaced.

Take it to O'reilly's they will replace it for you also? Or pepboys

If you hear the clikclik sound when you turn ON your key, that means your battery is weak even light can turn ON, but the engine it can't; The starter are the same, but you need to make sure that the battery is fully charge that can able to start the engine. ok

big red
the only way you can damage your alternator is to not properly ground your amplifier get a bigger battery a optima deepcycle (Yellow one) battery will help so you can use it with out turning your vehicle on.