The 2009 GMC Acadia typically uses a Group Size 75, 12-volt battery, around 720–760 cold-cranking amps. Exact sizing can vary by engine and trim, so always verify with the current battery label or the owner's manual for your VIN.
Battery sizing basics for the 2009 Acadia
Battery group size is a standard that ensures the battery fits in the tray, aligns with the terminals, and delivers the required cranking power for your engine. While Group Size 75 covers most 2009 Acadias, variations can occur based on specific configurations or regional specs. Always confirm the exact size before purchasing a replacement.
Before you consult replacements, note that the group size is linked to fitment and power ratings. The following guidance helps you quickly identify the correct size and avoid mismatches.
Common sizes and quick reference
- Group Size 75 is the typical replacement size for most 2009 Acadia models (12V battery with standard CCA/RC ratings).
Variation can occur by engine option, trim level, or regional specification. Always confirm with your current battery label or the owner's manual for your exact VIN.
How to confirm the exact size for your vehicle
To ensure you buy the correct battery, follow these verification steps before purchasing a replacement.
- Inspect the current battery label on top of the battery and note the Group Size printed there (often a number like 75, 65, or 24F).
- Check the owner’s manual or the Electrical/Electrical System section for the official battery specification for your trim and engine option.
- If needed, contact a GM dealership or reference the GM Parts Diagram by VIN to pull the exact battery size for your vehicle.
- When selecting a replacement, ensure the battery’s physical dimensions, terminal layout, and post orientation match the current battery to fit the tray and connections.
- Choose a battery with at least equal or higher cold-cranking amps (CCA) and reserve capacity (RC) than the original specification for reliable starting power.
Verifying these details helps prevent fitment issues and ensures reliable starting in all conditions.
Additional considerations and care tips
While Group Size 75 is standard for most 2009 Acadias, you may consider modern options such as AGM batteries if you operate in extreme climates or want longer life and better vibration resistance. Always verify compatibility with your vehicle’s charging system and follow the manufacturer’s recommendations in the owner’s manual and with aftermarket suppliers.
Summary
In summary, the 2009 GMC Acadia most commonly uses a Group Size 75, 12-volt battery. Always confirm the exact size using the current battery label, the owner's manual, or the dealer’s parts diagram for your VIN, and ensure the replacement meets or exceeds the original CCA and RC ratings for dependable starting power.
Can I use a group 24 battery instead of 35?
Group-24, Group-27
The Group 24 and 27 Batteries are mostly found in older American Cars, and some Hondas, GMs and will be often used in boats. They are basically the same size except for length. Our Group-35 can be used in place of a Group-24; it is only 1-inch shorter left to right dimensions.
What size battery is in a 2009 GMC Acadia?
DieHard Gold – Battery : H6 Group Size, 750 CCA, 935 CA, 115 Minute Reserve Capacity (Part No. 48H6)
What year was the worst year for GMC Acadia?
A: Potential buyers should avoid the GMC Acadia from the first generation, particularly the 2008 model year, and from the second generation, the 2012 and 2013 model years are not recommended. Additionally, the third generation's 2017 and 2018 models have had their share of issues.
What battery does a GMC Acadia take?
DieHard Platinum AGM – Battery : H6 Group Size, 760 CCA, 950 CA, 120 Minute Reserve Capacity (Part No. H6-AGM)


