Electrical Problems - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 1 (permalink) Old 06-06-2009, 05:57 AM Thread Starter
Join Date: May 2009
Posts: 14
Electrical Problems

I have posting and receiving some good answers. Here is my new story for the Cobalt 05, 2.2L Sedan Automatic.
  • New Alternator (Bosch)
  • New Battery (1000 AMPS)

It does not have normal voltage readings. It was on 12.0 and 12.26. I took it the Electro-mechanic. He found that the positive screw on the trunk was rusted. They cleaned it and it started reading 13.1 and went to 13.95 and higher (with A/C, lights, radio on).

Came home, tried to start the car, DID'NT want to. Did it for a second time and it started and again reading 12.26 and in less than 5 minutes went to normal 14.0.

He gave me a technical service bulletin issued July 21, 2008 that these cars and some Hummers, Saab by GM have this incident. Extended periods of engine idling, may result in a discharged battery. This was extracted from the Mitchell Repair Information Company, LLC.

I am so sad this is happening. I don't feel save driving this car. Has anyone before had this issue or having it?
Rosanna7399 is offline  
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