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Professional geek
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i have an 08 g6 and when slowing down or sitting at the light a the lights inside and outside the car dim iany ideas what it could be?
It could be a bad voltage regulator (which is built into the alternator) or a failing battery. I know that several auto stores around me will perform a free or very reasonably-priced test of your battery and charging system, usually in the hopes they can sell you whatever you need since you're already there...

~ MattInSoCal
 
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