2005-2008 LaCrosse ECM Engine Computer 19260507 Programmed

Restore Your Engine’s Performance!

Get your vehicle back on the road with this genuine GM Engine Control Module. Pre-programmed to your VIN for a simple, plug-and-play installation. This is a direct-fit replacement for multiple Buick and Cadillac models, solving issues like stalling and check engine lights. Provide your VIN at checkout and we’ll handle the rest!

$362.20

+11.99 USPS Priority Shipping

Availability: Only 1 left in stock



SKU: 590-07145-20 Categories: ,
Guaranteed Safe Checkout

Is Your GM Vehicle Running Rough? The ECM Might Be the Culprit.

If you’re dealing with a persistent check engine light, unexplained stalling, poor fuel economy, or a car that simply won’t start, the root cause might be a failing Engine Control Module (ECM). As the central computer for your engine, the ECM manages everything from fuel injection and ignition timing to emissions controls. When it fails, it can lead to a host of frustrating and difficult-to-diagnose issues. This listing offers a reliable and straightforward solution: a genuine, used GM ECM (part number 19260507, also compatible with 12581144, 12588472, and 12592124) that is professionally programmed specifically for your vehicle.

From the Diagnostic Bay

We once had a 2007 Cadillac SRX with the 3.6L engine come into the shop with a very elusive problem. The owner complained of harsh transmission shifts and a check engine light for a P0606 (Internal Control Module Processor Error) code that would appear and disappear randomly. We spent hours checking wiring harnesses, grounds, and sensor data, but everything looked perfect. On a hunch, we sourced a known-good ECM and installed it. Instantly, the shifting smoothed out and the code never returned. The original ECM had a subtle internal fault that only manifested under specific operating conditions, mimicking a transmission or sensor problem. It’s a classic example of how a failing computer can send you chasing ghosts.

Common Symptoms of a Failing ECM

  • ✔ Check Engine Light: The most common indicator, often with codes related to internal processor failure (like P0601-P0606) or communication errors.
  • ✔ Engine Stalling or Misfiring: The ECM may fail to correctly time spark or fuel delivery, leading to rough running, stalling, and misfires.
  • ✔ No-Start Condition: A completely failed ECM can prevent the engine from starting at all by cutting off fuel or spark.
  • ✔ Poor Performance & Fuel Economy: Incorrect calculations for the air-fuel mixture can cause a noticeable drop in power and an increase in fuel consumption.
  • ✔ Erratic Transmission Behavior: The ECM communicates with the Transmission Control Module (TCM). A faulty ECM can send bad data, causing harsh or incorrect shifting.
  • ✔ Communication Loss: Your mechanic’s diagnostic scan tool may be unable to communicate with the vehicle’s computer system.

Why VIN Programming is Essential for Your 2005-2008 LaCrosse ECM

You cannot simply take an ECM from another vehicle and install it in yours. Modern vehicles use a sophisticated anti-theft system (VATS/Passlock) and require the ECM to be programmed with your vehicle’s unique Vehicle Identification Number (VIN). This process ensures that all the modules in your car can communicate correctly and that the engine operates according to the specific parameters for your model, engine, and options. Our service eliminates the need for an expensive trip to the dealership. We flash the module with the latest GM-certified software using your VIN, so it arrives ready for a true plug-and-play installation.

Simple Installation Process

Once you receive your programmed ECM, installation is straightforward for a DIY mechanic or any professional shop. While the exact location varies by model, the general steps are:

  1. Disconnect the Battery: Always disconnect the negative battery terminal before working on any electronic components.
  2. Locate the ECM: On models like the Buick LaCrosse and Allure, it’s often found in the lower air cleaner housing. On Cadillac models, it’s typically in the engine compartment.
  3. Swap the Module: Carefully disconnect the electrical connectors and remove any mounting bolts. Install the new module in its place and securely reconnect the connectors.
  4. Reconnect the Battery: Once the new ECM is installed, reconnect the battery terminal.
  5. Perform Idle Relearn (If Necessary): In some cases, a simple idle relearn procedure may be needed, which typically involves starting the car and letting it idle for a few minutes.

Guaranteed Fitment

This ECM is a direct replacement for vehicles equipped with one of the following service numbers: 12581144, 12588472, 12592124, or 19260507. Please verify compatibility with your vehicle below:

  • Buick Allure: 2005-2008 (3.6L)
  • Buick LaCrosse: 2005-2008 (3.6L)
  • Buick Rendezvous: 2004-2006 (3.6L)
  • Cadillac CTS: 2004-2007 (Base, ID 12592124 or 19260507)
  • Cadillac SRX: 2004-2006 (3.6L)

Frequently Asked Questions

Why do I need to provide my VIN?

Your VIN (Vehicle Identification Number) is required to program the ECM with the correct software, options, and security information for your specific car. Without this programming, the module will not function and will prevent your vehicle from starting.

Is this a plug-and-play part?

Yes! Because we program the module to your VIN before shipping, it arrives ready to be installed without any additional programming or trips to the dealership. It is a true plug-and-play solution.

Will this fix my check engine light?

If the check engine light is caused by a faulty ECM (e.g., internal processor error codes), then this replacement module will resolve the issue. However, if the light is on due to other failing sensors or components, those issues will still need to be addressed.

This part is used. Is it reliable?

Yes. This ECM is a genuine OEM part sourced from a salvaged vehicle. Each unit is inspected and tested to ensure it is fully functional before being programmed and shipped. It offers OEM reliability without the high cost of a new part from the dealer.

What if my original part number is different from 19260507?

This module is a direct replacement for several service numbers, including 12581144, 12588472, and 12592124. As long as your original module has one of these numbers, this part is compatible.

Condition

Refurbished

Year
Genuine OEM

Yes

MPN

19260507

Interchange part number

PartNumber

590

Model

LACROSSE

Year

2004

Brand

GM

Manufacturer Part Number

, , ,

Hardware Type

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