The standard replacement is a 12-volt battery in Group Size 75, with sufficient cold-cranking amps (CCA) for your climate. Always verify the exact size by checking your owner’s manual or the label on the current battery.
Understanding the requirement
Battery size matters for fit and performance. The LaCrosse’s electrical system is designed for a battery that fits the tray, terminals, and provides adequate cranking power to start the V6 engine and run the car’s electronics. Climate and equipment level can influence the minimum CCA you should choose.
Common group size for the 2011 LaCrosse
Most owners and parts catalogs list Group Size 75 as the typical fit. The associated CCA range generally sits around 600–750, depending on climate and optional equipment. If your current battery differs in size or you live in an extreme climate, opting for the higher end of the CCA range is sensible.
- Group Size 75: the most commonly recommended size for the 2011 LaCrosse.
Conclusion: Group Size 75 is the baseline starting point; always verify the exact size for your vehicle.
How to verify and replace
To ensure you get the correct battery, follow these steps before purchasing:
- Check the owner's manual or the battery section of your manual for the recommended Group Size and CCA.
- Inspect the label on your current battery to read the Group Size and CCA specifications.
- Measure the battery tray and confirm terminal layout to ensure a proper fit and correct post type.
- Choose a replacement with equal or higher CCA and adequate reserve capacity (RC) for your climate.
Conclusion: If you’re unsure, consult a Buick dealer or a trusted auto parts professional to confirm the exact match for your engine and climate.
Shopping tips
Consider whether you want a standard flooded lead-acid battery or an AGM (absorbed glass mat) battery. AGM batteries can offer longer life and better performance in extreme temperatures but may cost more and require compatible charging systems. Ensure any replacement matches Group Size 75 and provides sufficient CCA for your conditions.
- Flooded Lead-Acid, Group Size 75: typically 600–750 CCA; solid value for most drivers.
- AGM, Group Size 75: typically 700–800 CCA; higher cost but improved longevity and performance in harsh climates.
Conclusion: Either option can work as long as the group size, terminal configuration, and CCA requirements align with your LaCrosse.
Summary
For a 2011 Buick LaCrosse, the go-to replacement battery is generally Group Size 75 (12V) with a CCA rating appropriate for your climate (commonly 600–750 CCA). Always verify against the owner’s manual or the current battery label, and ensure the new battery fits the tray and terminal layout. If in doubt, seek guidance from a Buick dealer or a qualified auto parts professional to confirm the exact match for your vehicle.
What is the correct size of my car battery?
While you could grab a ruler and attempt to measure the exact width and height of your current car battery, pop the hood and simply look for "Group Size" printed on the label of the battery or check your owner's manual.
What kind of battery does a 2011 Buick LaCrosse take?
Super Start Platinum AGM Top Post Battery Group Size 48 H6 760 CCA 120 Minute RC - 48PLT.
How much is a battery for a Buick LaCrosse?
between $351 and $374
The average cost for a Buick LaCrosse Battery Replacement is between $351 and $374. Labor costs are estimated between $49 and $72 while parts are typically priced around $302.
What year is a bad Buick LaCrosse?
Quick Answer: Buick LaCrosse Years to Avoid & Best Years
⚠️ Years to Avoid:2005, 2006, 2008, 2010, and 2011. Why? The 2005–2008 models suffer from frustrating electrical gremlins and steering issues.