Battery issue?

I totally agree with the earlier reply I'm almost certain it's the alternator. 300 dollar job in most cases good luck

Failing alternators always whine before failure. They whine louder as you increase the power load. Get a new one for $100 and put it in yourself, it's easy on that engine. I totally agree with both replies. Good, complete advice that applies to all cars.

My problem with taking it somewhere to be tested is that the car won't even stay on long enough after a jump to drive anywhere to get it tested. I'm really thinking it's the alternator. Someone also mentioned something about a wiring fuse not being connected correctly? Or wire being bad? The battery light is lit up on dash and the only time it has ever went off is when we messed the wire attached to the alternator.

It's the alternator I'm 99.9 percent sure

I have the same exact problem , but my alternator is brand new . But it’s making a whining noise . I believe it’s the belt . The mech said I should have put grease back on the belt .

O9 pontic G6 ...my car keeps stalling.... It will start then just stall or I will go some where and it will not start... Replaced the battery and starter already. Got the alternator tested it's good.

Alternator is draining the battery, overcharging due to the Fusible Link these were my diagnoses when i went to shops, mobile mechanics, and referral mechanics. I had to replace battery, alternator, and have the fusible link done. I had the same exact issues.

I have a 05 Pontiac G6 try to find this morning got to work start it slow I got a home turned it off try to start it again and it wouldn't start at all just a clicking noise purchased a new battery but it in start it up Road fine for about a week got back to work same problem purchased a new alternator same problem what would I check from this point

I have a 05 Pontiac G6 try to start this morning it started just fine got to work start it slow I got a home turned it off try to start it again and it wouldn't start at all lights went dim and I got a clicking noise purchased a new battery it in start it up Road fine for about a week got back to work same problem purchased a new battery and alternator same problem but this time it wouldn't start at all what would I check from this point

My battery light is on, on my 2008 Pontiac

I have a 06 g6 and I am having the same problems and I can’t figure it out I have changed the battery and I drove it to my sisters and back home and then to the doctors the next morning and back to my sisters and I was getting ready to go home my car started locking up and wanting to die down the head lights was going on and off and I really don’t know if it’s the alternator I am thinking maybe the ground wire or something please anyone have and ideas??