Issues with 2016 Chevy Malibu Dual Battery Control Module – Help Needed!

Overview of the Dual Battery System in the 2016 Chevy Malibu

The 2016 Chevy Malibu comes equipped with an auxiliary battery system, which is managed by the dual battery control module. This system is designed to enhance vehicle performance, especially in terms of energy management and starting power. However, many owners have encountered issues related to this module, particularly when it triggers error code P305F.

Common Symptoms

When the dual battery control module has problems, you might notice some or all of the following symptoms:

  • Warning lights: Dashboard lights may indicate an issue with the battery system.
  • Diminished power: The vehicle might not start as expected.
  • Electrical issues: Problems with electronic features, like audio or navigation systems.

Troubleshooting Steps

If you’re facing issues with your 2016 Malibu’s dual battery control module, here are some troubleshooting tips:

  1. Check for Codes: Use an OBD-II scanner to check for diagnostic trouble codes. This can provide insights beyond just the P305F.
  2. Inspect Battery Connections: Ensure that all battery terminals are clean and secure. A loose connection can lead to performance issues.
  3. Test the Batteries: Have both the main and auxiliary batteries tested at an auto parts store.
  4. Examine Wiring and Grounding: Inspect wiring for signs of wear, corrosion, or damage. Make sure the ground connections are solid.

Solutions and Repairs

If diagnostics point to a failing dual battery control module, here are some options:

  • Replacement: Sometimes, the module simply needs replacement. Ensure you get the correct part for your model.
  • Reprogramming the Module: In some cases, reprogramming the module may resolve the issue without needing a new part.

Where to Get Help

  • Forum Resources: Look for discussions on forums dedicated to Chevy vehicles. Owners often share their experiences and insights.
  • YouTube Tutorials: Search for troubleshooting videos related to the Malibu’s dual battery control module.
  • Local Mechanics: If in doubt, consult a mechanic who specializes in electrical systems for detailed diagnostics.

Final Thoughts

I hope this information helps guide you in diagnosing and addressing issues with the dual battery control module in your 2016 Chevy Malibu. Please feel free to share your experiences or additional tips below! Let’s help each other solve these electrical challenges.


I’ve been having serious issues with my 2016 Malibu’s dual battery control module. It randomly fails, causing my car to stall unexpectedly. Has anyone else experienced this?

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Have you checked your battery connections? Sometimes loose connections can mimic the symptoms you’re describing, especially with dual battery systems.

I feel your pain! My Malibu started exhibiting strange electrical issues like flickering lights before it died completely. It’s so frustrating!

That’s a great point, ehowe! I’ve had similar issues and it turned out the ground connection was corroded. Definitely check that!

Is it possible that the control module just needs updating? I’ve heard some users successfully solved issues with software resets or updates from dealerships.

I thought about this too but my dealer says my software is up to date. Now what? It feels like I’m stuck!

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I find it odd that such a modern car has so many dual battery control module problems. Seems like a design flaw or cheap component issue to me.

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Yeah, I agree! It’s almost like they rushed the design. My Malibu also suffers from erratic battery readings, which can’t be good for performance. What a letdown!

I empathize with everyone here. If I could trade in my Malibu for anything else, I would in a heartbeat. What’s the best alternative sedan right now?

I had that last week! Stalled in the middle of traffic, and I had to push it to the side. Talk about embarrassing!

Seriously considering a switch too! My Malibu’s performance is just not cutting it anymore. I’m eyeing a Toyota Camry! Any thoughts?

Timing is everything! I was just about to suggest a Camry! My friend has one, and it’s been super reliable. It might be worth the leap!

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You know, at this point, I might as well just paint my Malibu with ‘please don’t fail’ on it. It’s like waiting for a ticking time bomb sometimes!

LOL! I can relate. Every startup is like a horror movie moment for me now!

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I wonder if GM is aware of these issues! Seems like they should provide a recall or at least more clarity on fixing this mess.

They should definitely step up their game! I’m tired of being ignored as a customer. I feel like I’m in a poorly made sitcom called ‘My Failing Malibu.’

I guess we just need to hope they don’t write a sequel! Let’s keep sharing solutions until someone finds the magic fix for our Malibus!

I’ve been having issues with the dual battery system too! Have you checked the error codes with a scanner? It can really help pinpoint the problem.

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What scanner do you recommend? I’ve been using a basic one and I’m not sure if it’s picking up all the codes.