Thread: Battery 2004 Grand Prix GT

A battery is a battery; GPs will run pretty much any 12V automotive battery that will fit. (and in general most batteries fit) Keeping in mind the CCA rating and it having the right posts are key.

I just replaced my battery a couple months ago using a standard size 34 (top posts) with 690 CCA. Now if I’m correct the size 78s have side posts. I know my 02 GP had side posts, but my 08 GP has top posts. Anyway, just make sure you have the right post configuration is what I’m getting at. And capacity wise I’d aim for about 650-700 CCA, any more would be a waste unless your running huge amps or something.

Be aware that when I bought my battery they had my replacement battery designated as a fancy gel battery for some reason. Which btw is twice the cost of a regular battery, more over my car didn’t even come stock with a gel battery. Lol

Also, when you replace the battery it is the perfect time to check the fender well ground. They are in a really bad place and tend to corrode on GPs. The other grounds usually are fine unless they get damaged or something. Just unbolt it with the battery out and clean up the connections with some sand paper or wire brush.

Um huh…

You’re some kind of battery guru and you come here looking for information?

And you are concerned the “application manual” warning of electrical damage, did it ever run through your mind why the warning is so vague? Heck my manual says I’ll get cancer if I touch my battery, but only if I live in California!?! Hey but who knows maybe the years spent as an electrician I missed a day or two of class on special lead acid batteries. In a round about way I was trying to give you a little practical information that I have picked up over last 11 years maintaining my GPs. But hey just bring it to the dealer; I’m sure they will put a non-damaging battery in. lmao

@cerick08gp , that's not cool bro , I live in california : )