Vehicle:
2007 Pontiac Grand Prix GT 3.8L V6 Supercharged
Problem:
My 2007 Pontiac Grand Prix GT recently had the alternator fail, I noticed also noticed my serpentine belt was shredding. I replaced the alternator and belts as anyone would of thought more issues came later. The vehicle worked fine for about a 3 weeks then I started getting a DIM Alert about a “Charging System Failure”. I didn’t think much of this and still drove the 30 miles to work for about a week. Then one day on my way to work the car started to fully go out, the DIM stated “Charging System Failure” 2 minutes later “Battery Saver Mode Active” at this point I pull over to the side of the road and turn off my car, waited 5 minutes tried to restart and nothing. I had to call a family member to come to jump my car and when she jumped it, it was still losing power, but eventually driving the car home, the voltage shot from 11.6 to 14.3 the entire way home. Once I got home, I cleaned the battery terminals with baking soda and a wire brush. After I finished this, tried to drive around the block, and maybe 5 minutes into the drive the “Charging System Failure” appeared. So I took my car to Autozone to get the battery tested and they said my battery was bad. So I went to Walmart and got a new battery and new terminal connector for the positive terminal. I replaced the connector and the battery at the same time and tried to start the car and it drove normally for maybe an hour total then the “Charging System Failure” appeared, keep in mind it’s running at around 11.9v while driving. So I looked into it more and asked a couple of questions on forums and people said to replace the Battery current sensor, so I did just that and the entire negative battery terminal cable. Went to start the car and it was sitting at 11.5v and anytime I turned on my AC or my headlights it kept dropping, eventually turned the car off at 11.3v. I then had to leave on a vacation, and I was gone for a total of 10 days, I came back and tried to start it and I got nothing. She doesn’t even light up. Now that leads me to where we are now.
A thing I did want to mention is that when I first replaced the alternator very light white smoke appeared to be coming from the front of the engine block. ( Couldn’t find the source, only happened after replacing the alternator. ) It did this 2 times total, once on initial replacement and the second time when I replaced the battery and started the car.
I honestly don’t have money to go to a mechanic so I am trying to fix it myself, not sure where to go from here.
I have a few posts on here regarding the issue but they seem to have died off, any input would help a ton. I really want to do this myself but I’m at a loss for words on what it can be if I replaced every part of the charging system.