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Old 03-25-2017, 06:43 PM   #1
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Question Duramax battery question

Brand new to duramax diesel driving. I just bought a 2013 silverado 3500HD duramax with 51,000 miles...runs great!!! How many batteries does this beast take? I've had a couple times when the truck wouldn't turn over after not being started for a week. It sits in my garage in michigan and the temp in the garage has not been below 30 degrees. I plugged it in for an hour and the battery was just able to crank it enough to get it started..no problem after that. I think the battery is original. Could it be the battery is getting old and can I change it or them myself. Any help would be appreciated. Thanks
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Old 03-26-2017, 08:08 AM   #2
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You should have two batteries. If it doesn't crank well after sitting you probably need to replace both. Most any auto parts store will check them for you. If you replace them try to get as close to 800 CCA or more if you live in a cold climate. I hope this helps.
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Old 03-26-2017, 09:21 AM   #3
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Quote:
Originally Posted by oldtaz View Post
You should have two batteries. If it doesn't crank well after sitting you probably need to replace both. Most any auto parts store will check them for you. If you replace them try to get as close to 800 CCA or more if you live in a cold climate. I hope this helps.
Mr Taz... Thank you for the response...they certainly don't make these batteries to be easily accessed. I appreciate the help!!!
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Old 03-26-2017, 06:52 PM   #4
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Altho they all wear down at some point, it took me maybe 10 mins/side to recently replace both in my 450...but I've also had to replace the engine, and the cab has to come off--that took a little longer.
Replace both even if one shows to be ok. Get some good ones, having them run down is a hassle.
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