Question about Chevrolet Cobalt

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Alternator overcharging 2005 chevy cobalt battery overcharging even after replaced with 2New alternator in 1week.Any common known problems with this or suggestions of what to look or check next?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 6982 Answers

SOURCE: Battery overcharges and light is on

Never saw a charging system problem cause anyone to fail inspection. But, overcharging will cook the water out of your battery and can damage the computer system if not taken care of. Overcharge can be caused by either a grounded alternator field wire or a bad regulator. Since the condition appeared after replacing the alternator it too is suspect as an internal grounding can also cause that.

Posted on Jul 20, 2009

  • 9 Answers

SOURCE: 2005 Chevy Cobalt, how do you reset a fault code?

Your car has a OBD2 hook up under the dash somewhere on the drivers side, You have to have a computer to hook up to that ODB plug and reset it, If you live near a Autozone they will clear the code for you for free, One other thing you try is disconnecting your battery for about 30 mins, that works on alot cars to reset the check light.

Posted on Mar 20, 2009

BelgianAlien
  • 50 Answers

SOURCE: my 2005 chevy cobalt factory radio is locked

There are only 2 things you can try to fix this yourself: turn off the engine and open the driver side door (to turn the radio off). Wait 5 minutes, start your car.
If that does not solve it, turn off your engine, disconnect the car battery, wait about 5 minutes. Reconnect the battery (negative pole first - black connector) and try your radio again.

If neither one of these two fix your problem, I am afraid only a GM service center or dealership can fix the problem. The Cobalt is notorious for all kinds of electrical issues.

Thanks for using the fixya forums!

Posted on Mar 28, 2009

texastbone
  • 63 Answers

SOURCE: 2005 chevy cobalt, car wont start ... check

disconecting the battery should reset the pcm. but you will need to find out what caused the problems.

Posted on Jan 06, 2010

SOURCE: I have a 2006 Chevy Cobalt with the check engine

Did you get gas shortly before the light came on? It's not uncommon for a loose gas cap to set this code. Take the cap off and look at the seal. If it's cracked replace it with a new OEM cap. If not, reinstall it and make sure it's on all the way. Then you can clear the code and see if it comes back.

Posted on Jul 24, 2010

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My 2005 chevy cobalt starter is locked...thus battery clicks as if it is drained when I try to turn on car. I think the key fob somehow locked started, but I cannot figure out how to undo it...I cannot...


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