Is Your Cadillac XLR Running Rough? It Could Be the ECM.
If your 2006 Cadillac XLR is experiencing perplexing issues like random stalling, poor fuel economy, a persistent Check Engine Light, or a complete no-start condition, the root cause is often a failing Engine Control Module (ECM). As the central computer of your vehicle, the ECM is responsible for managing everything from fuel injection and ignition timing to transmission shifting. When it begins to fail, it can create a cascade of problems that are difficult to diagnose and can sideline your vehicle indefinitely.
This replacement Engine Control Module, service number 12630457, is the definitive solution to restore your vehicle’s performance and reliability. It’s not just a part in a box; it’s a comprehensive service designed to get you back on the road with confidence. We take the guesswork out of the repair by programming the module specifically for your vehicle using your VIN. This ensures that all factory settings, security information, and operational parameters are perfectly matched to your Cadillac’s original specifications.
From the Diagnostic Bay
We had a 2008 Cadillac DTS come into the shop with a laundry list of complaints from the owner. The car would hesitate under acceleration, the transmission would shift erratically, and it had a check engine light with codes for multiple unrelated sensors. The previous mechanic had already replaced two sensors and a coil pack with no success. After running a full diagnostic, we noticed communication dropouts with the main computer. We sourced a replacement ECM, programmed it to the car’s VIN before installation, and performed the security relearn. The car immediately ran like new. All the ghost codes vanished, and the performance was restored. It’s a classic case of a failing central computer causing phantom issues all over the vehicle.
Why Choose Our Programmed 2006 XLR ECM Replacement?
Replacing an ECM is not as simple as swapping out a battery. Modern vehicle computers are tied to the vehicle’s security system (like Passlock or VATS). Our professional programming service handles this critical step for you. By providing your Vehicle Identification Number (VIN) after purchase, you receive a module that is loaded with the latest GM-certified software updates. This process corrects common factory software issues, improves performance, and ensures seamless integration with your vehicle’s other electronic systems. This is a direct-fit replacement for a wide variety of GM vehicles and is interchangeable with service numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 19210737.
Symptoms of a Failing Engine Control Module
- ✔ Check Engine Light is on or flashes intermittently.
- ✔ Vehicle will not start or is difficult to start.
- ✔ Stalling or rough idling for no apparent reason.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Poor engine performance, including hesitation or misfires.
- ✔ Automatic transmission shifting issues.
- ✔ Communication errors with diagnostic scan tools.
Don’t let a faulty computer dictate your driving experience. This professionally programmed ECM is your reliable, straightforward solution to get your vehicle operating as the manufacturer intended. Simply provide your VIN, and we’ll handle the complex programming, shipping you a part that’s ready for installation.
Frequently Asked Questions
Why do you need my VIN?
Your VIN (Vehicle Identification Number) is essential for programming the ECM. It allows us to load the exact software, settings, and security information specific to your vehicle’s engine, transmission, and options package. This ensures the module works correctly right out of the box.
Is this part difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery and swapping the old module with the new one. However, after installation, you may need to perform a security relearn procedure (often called a VATS relearn), which can usually be done without special tools. Instructions are widely available online for this simple process.
Will this fix my check engine light?
If the check engine light and other symptoms are caused by a faulty ECM, this replacement part will solve the problem. It’s crucial to have a proper diagnosis to confirm the ECM is the point of failure before ordering.
What happens if I don’t provide my VIN?
We cannot ship the module until we receive your VIN. The programming service is a mandatory and integral part of this product, as an unprogrammed module will not start or run your vehicle. Please provide your VIN promptly after purchase to avoid delays.
Is this compatible with other GM vehicles?
Yes, this ECM is compatible with a very wide range of GM vehicles from Buick, Cadillac, Chevrolet, GMC, Pontiac, Saturn, Isuzu, and Saab. Please review the detailed fitment list on this page to confirm it matches your specific year, make, model, and engine size.