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Old 09-13-2019, 04:34 PM
shook1's Avatar
shook1 shook1 is offline
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Join Date: Feb 2007
Location: Jobstown, NJ
Posts: 131
Default alt warning at stop lights

I have a 2009 G8 GT. It runs and drives fine. Lately, when I sit at a stop light for too long, I get an alternator warning alert on my dash, and a battery icon. The car idles normally, and I see no other issues while this is happening. When I accelerate, the warnings immediately go away. I only see them when I sit for an extended period of time at a light.

I don't see an alternator or battery gauge in my car. I even pushed the buttons on the steering wheel, thinking I might see the voltage, like when it shows mpg and average speed.

Anyways, my first inclination is to think it is either a worn battery, or the alternator. Either of which will probably cost a couple hundred dollars. I have not tested anything with a multi-meter yet. Has anyone had this problem? I wonder if there is a known harness or connector issue with these cars.

Thanks in advance for any constructive advice.

-Luke
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