What Battery Size for a 2016 Duramax?

Maintenance and Repairs
1

I’m looking for some help regarding the battery size for my 2016 Duramax truck. I’ve been having some issues lately, and I think it might be time to replace the battery.

What I Know

From what I’ve researched, the Duramax is known for its powerful diesel engine, but I’m not entirely sure what battery it needs. I want to ensure that I’m getting the right specifications for it.

Battery Size Info

I’ve seen discussions about different battery sizes ranging from Group 48 to Group 94R.

  • Group 48: I read that this is common for some models, but not sure if it fits mine.
  • Group 94R: Seems more aligned with the Duramax, especially if you’re looking for heavier-duty options.

Questions

  1. What are the exact specifications? Can anyone confirm the correct battery group for the 2016 Duramax?
  2. Upgrading vs. Replacing: Should I stick with the original size, or is there any benefit to upgrading it to a higher capacity?
  3. Recommendations: What brands or types have you had success with?

Conclusion

I appreciate any insight you all have! Whether it’s details on the standard size, suggestions for upgrades, or personal experiences, I’m all ears. Thanks for the help!

6 Likes
2

Hey everyone! I’m looking into what battery size I need for my 2016 Duramax. Anyone know the specific cold cranking amps (CCA) I should look for?

6 Likes
3

You’ll want a battery with at least 850 CCA. The dimensions typically are around 13.0 x 6.8 x 7.5 inches for a Group 94R setup.

7 Likes
4

I just replaced mine! The terminal configuration you need is the standard post type. Make sure they’re on the right sides for your Duramax.

5

It’s also worth checking if your local climate impacts the CCA needed. Warmer climates may get away with less, while colder extremes definitely need more.

6

I’m curious, did anyone consider opting for an AGM battery? They have a longer life span and better resistance to vibrations, which is great for the Duramax.

7

AGMs are awesome! However, they can be pricier. If you’re not driving off-road, a standard battery might work just fine.

8

I hear you, but for those of us on a budget, the standard lead-acid batteries often suffice and are easier to replace.

9

I recently went through this too! Just make sure to check your old battery’s exact dimensions before you purchase. Mismatched sizes can be a pain!

10

Absolutely! Plus, a snug fit helps maintain good connections. A loose battery can lead to electrical issues.

11

Don’t forget to check your warranty! A good battery can last a while, so investing in a quality one can save you money down the line.

1 Like
12

And if all else fails, just carry a jump starter in your truck. You never know when you’re going to need a ‘little’ boost on the road!

13

I’m currently using an Optima Red Top in my 2016 Duramax, and it’s been great! Excellent starting power and quite durable. I highly recommend it.

3 Likes
14

I’ve heard good things about the Duralast batteries too! They have a solid warranty and seem to perform well.

15

If you’re looking for longevity, I swear by the AGM batteries. They last way longer compared to traditional lead-acid ones.

16

Totally agree! I switched to an Exide AGM last year and haven’t looked back. Performance is on point!

1 Like
17

I’ve been using Interstate batteries for a while, and they haven’t let me down. Reliable and decent lifespan!

18

Interstate is decent, but have you tried the ACDelco batteries? They’re specifically designed for GM vehicles!

19

I’ve heard mixed reviews about ACDelco. Some love them, others have had issues with longevity.

20

That’s interesting! I had a friend who replaced their ACDelco after just two years. Maybe it depends on the model?

2 Likes