Restore Peak Performance to Your Vehicle’s Engine
Is your Cadillac, Buick, or Chevy suffering from baffling electrical issues, a persistent check engine light, or poor performance? The Engine Control Module (ECM) is the central computer of your vehicle, and when it starts to fail, it can cause a cascade of frustrating and hard-to-diagnose problems. As a technician with over 20 years of experience, I’ve seen firsthand how a failing ECM can mimic a dozen other issues. This replacement 2006 XLR Engine Control Module, part number 12607096, is the definitive solution to restore your vehicle’s factory-specified operation and reliability.
What sets this module apart is our professional programming service. Before we ship, we flash the unit with the latest official GM software updates, tailored specifically to your vehicle’s VIN. This means you receive a true plug-and-play part, eliminating the need for an expensive trip to the dealership for programming. Simply install the module, perform the vehicle’s security relearn procedure, and get back on the road with confidence.
From the Diagnostic Bay
I remember a 2008 Cadillac STS that came into the shop with a complaint of intermittent stalling and a no-start condition that would happen without warning. The owner had already replaced the battery and alternator. We scanned it and found a slew of communication error codes (U-codes) pointing to the ECM. After confirming power and ground to the module were solid, we knew the internal processor was failing. Swapping in a VIN-programmed ECM like this one resolved all the issues instantly. It’s a classic case where chasing individual symptoms is futile; the core problem lies with the vehicle’s computer.
Common Signs of a Failing ECM
If you’re experiencing any of the following, a faulty ECM could be the culprit. A replacement is often the most direct path to a permanent fix.
- ✔ Check Engine Light is on with codes like P0601, P0606, or U0100.
- ✔ Vehicle refuses to start or stalls intermittently.
- ✔ Noticeable drop in fuel economy or engine performance.
- ✔ Transmission shifting issues or harsh engagement.
- ✔ Communication problems with diagnostic scan tools.
- ✔ Failure to pass state emissions testing.
A Mechanic’s Guide to a Smooth Installation
Installing your new 2006 XLR Engine Control Module is a straightforward process for a DIYer with basic tools or any professional mechanic. Always consult a vehicle-specific service manual for detailed instructions and torque specs.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On the 2006 XLR, the ECM is typically found in the right-hand front of the engine compartment. For other models, it may be on the firewall, behind the fan shroud, or near the air cleaner housing. Refer to the fitment list for location hints.
- Disconnect Connectors: Carefully release the locking tabs on the electrical wiring harnesses and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed ECM in place and tighten the mounting bolts.
- Reconnect Everything: Firmly plug the wiring harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
- Perform Security Relearn: Most GM vehicles require a security relearn procedure to sync the new ECM with the vehicle’s anti-theft system. This can typically be done without special tools by cycling the key. A common method is the “10-Minute Relearn Procedure.”
Verified Compatibility for Your Vehicle
This ECM is a direct replacement for service number 12607096 and is also interchangeable with part numbers 12590032, 12602044, 12603530, 12605843, 12630457, and 19210737. It is guaranteed to fit a wide array of GM, Isuzu, and Saab vehicles. Please verify your model and options below to ensure a perfect match.
CADILLAC DTS 06-08 Electronic Control Module
CADILLAC STS 06 Electronic Control Module; (LH frame rail), 4.4L
CADILLAC XLR 06 Electronic Control Module; (RH front engine compartment), 4.4L
CADILLAC XLR 08-09 Electronic Control Module; (RH front engine compartment)
CHEVROLET COBALT 06 Electronic Control Module; (LH front engine compartment), 2.4L
CHEVROLET COLORADO 08 Electronic Control Module; (RH firewall)
CHEVROLET HHR 06 Electronic Control Module; (LH rear engine compartment), 2.4L
CHEVROLET IMPALA 06-09 Various Engines
… and many more.
Frequently Asked Questions
What is VIN programming and why do I need it?
What is VIN programming and why do I need it?
VIN programming is the process of loading your vehicle’s specific software and settings into the ECM. This ensures all systems, from the engine and transmission to the anti-theft security, function correctly. We handle this for you before shipping, making the part ready to install out of the box and saving you a trip to the dealer.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (common codes include P0601-P0606), then yes, this part will resolve the issue. However, if the light is on due to a faulty sensor or other component, that part will still need to be addressed separately.
Is this part difficult to install myself?
For someone with basic mechanical skills and tools, the physical swap is straightforward. The most important step is performing the security relearn procedure after installation, which can usually be done at home. We provide general instructions, but a vehicle-specific manual is always recommended.
My original part number is different. Will this still work?
Yes. This ECM, part number 12607096, is a direct replacement for several other GM service numbers, including 12590032, 12602044, 12603530, and more, as listed in the description. As long as your vehicle is on our compatibility list, this module will function correctly once programmed to your VIN.