Alternator - Pontiac G8 Forum: G8 Forums -
Tech Lounge First Mods / Basic Tech Questions

LinkBack Thread Tools
post #1 of 5 (permalink) Old 10-15-2018, 01:41 AM Thread Starter
Junior Member
Carrie Beamer Prestage's Avatar
Join Date: Oct 2018
Posts: 1

I have a 2009 GT and I got a alternator warning light that then went to service charging system and battery saving mode. The car then completely failed and stopped driving. It started with a jump then died within 5 minutes with cables taken off. Is this just a battery issue or does the alternator need to be changed ?
Carrie Beamer Prestage is offline  
Sponsored Links
post #2 of 5 (permalink) Old 10-15-2018, 09:43 AM
Junior Member
Join Date: Jun 2015
Posts: 26
It's your alternator.

The battery is only used to get your car started. After it's started, the alternator is what keeps it running.

It's not a tough job. Not as easy as my '97 Siverado (2 bolts and a wiring harness), but not terrible.
gunbunny is offline  
post #3 of 5 (permalink) Old 10-15-2018, 09:45 AM
CCG8 Member
mjones73's Avatar
Join Date: Dec 2014
Location: North East, MD
Posts: 1,599
Purchase a new AC Delco through Amazon/Rock Auto/etc.

Matt Jones
2009 WH G8 GT Vararam/Kooks LT's/Corsa/BLP Probationary LL 219/223 .612/.615 112LSA/3.45s
mjones73 is offline  
post #4 of 5 (permalink) Old 10-15-2018, 09:53 AM
Junior Member
Join Date: Jun 2015
Posts: 26
I should add that if you keep trying to jump it and run it, you're only going to kill your battery and you'll have to replace that too.

If the car can't get enough juice to run from the alternator, it will suck it from the battery until it's exhausted, then everything goes dead.

From what it sounds like, you'll need to put the battery on a trickle charger in addition to replacing the alternator.
gunbunny is offline  
post #5 of 5 (permalink) Old 10-20-2018, 01:44 PM
Join Date: Sep 2017
Posts: 45
I have a used alternator that’s good if you want. The guy gave me a new one when I bought it and I just installed it
Nick.capalbo1 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Pontiac G8 Forum: G8 Forums - forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome