Programmed 2008-2009 Buick LaCrosse ECM 12603530 | Plug & Play

Drive with Confidence Again

End the frustration of a poorly running engine. This pre-programmed ECM for your 2008-2009 Buick LaCrosse is your key to restoring smooth, reliable performance. We flash it to your exact VIN, so you can install it with confidence and get back to worry-free driving. Take the first step towards a reliable rideโ€”order now!

$118.99

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 590-08112-124 Categories: ,
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Restore Your Buick’s Performance and Reliability

Is your 2008 or 2009 Buick LaCrosse suffering from perplexing issues like a persistent check engine light, rough idling, stalling, or poor fuel economy? These are classic signs of a failing Engine Control Module (ECM), the electronic brain of your vehicle. Don’t let a faulty computer keep you off the road. This professionally programmed ECM is the definitive, hassle-free solution to restore your car’s original performance and get you driving with confidence again.

Common Symptoms & Your Solution

A failing ECM can cause a wide range of frustrating problems. If you’re experiencing any of the following, this pre-programmed module is your answer:

  • Erratic engine performance, hesitation, or stalling
  • Noticeable decrease in fuel efficiency
  • Difficulty starting the engine or a no-start condition
  • Check Engine Light (CEL) with various Diagnostic Trouble Codes (DTCs)
  • Transmission shifting problems or harsh shifts
  • Communication errors with other vehicle modules

This isn’t just a replacement part; it’s a complete solution. We take a quality-inspected OEM unit and flash it with the latest, most stable GM-certified software, specifically matched to your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures that all engine parameters, fuel delivery, and emissions controls operate exactly as the factory intended. By purchasing a 2008-2009 Buick LaCrosse Programmed ECM from us, you bypass the expensive trip to the dealership for programming.

Features & Tangible Benefits

  • โœ” VIN-Programmed for Your Vehicle: Arrives ready for installation. We handle all the complex programming, so you don’t have to pay for expensive dealer services.
  • โœ” Plug & Play Installation: Once you receive the module, the installation is straightforward. In most cases, no complicated relearn procedures are required.
  • โœ” Updated GM Software: Your ECM will be loaded with the newest software updates from General Motors, addressing common bugs and improving overall performance and efficiency.
  • โœ” Broad Model Compatibility: This versatile E38 ECM is compatible with a wide range of GM vehicles, not just the LaCrosse. It replaces multiple service numbers including 12590032, 12602044, 12605843, and more, ensuring you get the right part.
  • โœ” Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.

Expert Insight: The Critical Role of Correct Programming

As a technician with over two decades of experience, I’ve seen countless drivers buy a used ECM from a salvage yard, hoping to save money. The problem is, that module is programmed for a different vehicle’s VIN, options, and security system. It simply won’t work correctly. It can lead to a no-start condition, incorrect engine operation, or even damage to other components. Our service eliminates that risk entirely. We ensure the 2008-2009 Buick LaCrosse Programmed ECM you receive is a perfect digital match for your car, just like a brand new one from the factory, saving you time, money, and immense frustration.

Frequently Asked Questions

Do I need to do any programming myself?

No. This ECM arrives fully programmed to the VIN you provide during checkout. It is ready for installation right out of the box. A standard security relearn procedure may be required, which is a simple process that takes about 30 minutes and does not require special tools.

How do I provide my VIN?

After you complete your purchase, you will need to send us your 17-digit VIN. You can typically find this on your vehicle’s registration, insurance card, or on the driver’s side dashboard visible through the windshield.

Is this a simple plug-and-play installation?

Yes, for the most part. The physical installation involves disconnecting the battery, unplugging the electrical connectors from the old ECM, removing it, and installing the new one. After installation, a simple security relearn procedure may be necessary, which can be done without any special tools.

Will this fix my specific problem?

While this 2008-2009 Buick LaCrosse Programmed ECM is the solution for a faulty engine computer, it’s crucial to ensure your vehicle has been properly diagnosed. This part will not fix issues related to bad sensors, wiring problems, or mechanical failures.

What if my car has an anti-theft system?

Our programming accounts for your vehicle’s factory-installed anti-theft system (Pass-Key, V.A.T.S., etc.). After installation, you may need to perform a security relearn procedure. We provide simple, easy-to-follow instructions for this process.

What does the warranty cover?

This unit is backed by our one-year replacement warranty, which covers any issues related to the proper function of the module itself. It provides coverage for the part for one full year from the date of purchase.

Genuine OEM

Yes

Year
Condition

Refurbished

MPN

12603530

Interchange part number

PartNumber

590

Model

LACROSSE

Year

2009

Brand

GM

Manufacturer Part Number

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Hardware Type

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