Is Your Buick Rendezvous Running Unreliably?
If you’re dealing with frustrating issues like a persistent Check Engine Light, poor engine performance, random stalling, or a complete no-start condition, a failing Engine Control Module (ECM) is often the culprit. The ECM is the brain of your vehicle, controlling everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can cause a cascade of problems that leave you stranded and stressed. Don’t let a faulty computer keep your reliable family vehicle off the road. This is the direct, hassle-free solution to restore its performance and your peace of mind.
Common Symptoms & Your Solution
A failing ECM can manifest in various ways. You might be experiencing one or more of the following:
- Erratic engine behavior, such as rough idling or misfires.
- Noticeable decrease in fuel economy.
- Difficulty starting the engine or a no-crank, no-start situation.
- Transmission shifting problems or getting stuck in gear.
- Check Engine Light (CEL) illuminated with communication-related Diagnostic Trouble Codes (DTCs).
This fully tested, genuine OEM 2004-2006 Buick Rendezvous ECM 19260507 is the definitive solution. We take the guesswork and expensive dealership visits out of the equation. Before we ship the unit, our technicians will program it with the latest GM software updates, specifically matched to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that when it arrives, it’s ready for a straightforward installation, restoring the precise performance your vehicle had when it left the factory.
Features & Benefits
- ✔ Plug & Play Installation: This ECM arrives pre-programmed to your VIN. No extra trips to the dealer for expensive flashing are required.
- ✔ Solves Common Issues: The correct fix for a wide range of running problems, from poor fuel mileage and rough idle to no-start conditions.
- ✔ OEM Reliability: Sourced from a salvaged vehicle, this is a genuine OEM part, ensuring perfect compatibility and durability that aftermarket parts can’t match.
- ✔ Cost-Effective Repair: Get your vehicle back on the road for a fraction of the cost of a new computer from a dealership.
- ✔ Updated Software: We flash the module with the newest updates from GM, ensuring optimal performance and efficiency.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
Why is programming so important? In modern vehicles like your Rendezvous, the ECM is integrated with nearly every other system. Programming it to your VIN doesn’t just tell the engine how to run—it syncs the computer with your vehicle’s specific options, anti-theft system (Passlock), and transmission controls. A generic, non-programmed module simply will not work and will often prevent the vehicle from starting at all. Our professional programming service ensures all these complex systems communicate perfectly, giving you a seamless repair and restoring full functionality right out of the box.
This module is the heart of your engine management system. By choosing our pre-programmed 2004-2006 Buick Rendezvous ECM 19260507, you’re not just buying a part; you’re buying a complete, reliable solution that gets you back on the road quickly and confidently. After placing your order, simply send us your VIN, and we’ll handle the rest.
Frequently Asked Questions
Do I need to do any programming after I receive this part?
No. This ECM comes fully programmed to your vehicle’s VIN. In most cases, it is a direct plug-and-play installation. Some vehicles may require a simple security relearn procedure, which can be done without any special tools and takes only a few minutes. We include instructions for this procedure if it applies to your vehicle.
How do I provide my VIN?
After you complete your purchase, you can send us a message with your 17-digit VIN. You can find your VIN on your vehicle’s registration, insurance card, or on the driver’s side dashboard near the windshield.
Is this a brand new part?
No, this is a genuine, tested OEM part that was carefully recovered from a salvaged vehicle. We inspect and test every unit to ensure it meets our high standards for quality and reliability, providing you with factory-level performance at a much lower cost.
What if my original part number is different?
This ECM, part number 19260507, is also a direct replacement for service numbers 12581144, 12588472, and 12592124. As long as your vehicle make, model, and year are listed in the compatibility chart, this part will work perfectly when programmed to your VIN.
What vehicles does this ECM fit?
This ECM fits several GM vehicles, including the 2004-2006 Buick Rendezvous, 2004-2007 Cadillac CTS, 2004-2006 Cadillac SRX, and 2005-2008 Buick Allure/LaCrosse models equipped with the 3.6L engine. Please check the detailed fitment list on this page to confirm compatibility.