Is Your Vehicle’s Brain on the Fritz? Restore Peak Performance Today!
The Engine Control Module (ECM), often called the engine’s computer, is the central command center for your vehicle’s most critical functions. It meticulously manages fuel injection, ignition timing, emissions systems, and transmission shifting to ensure your engine runs smoothly, efficiently, and reliably. When this vital component begins to fail, it can cause a cascade of confusing and frustrating problems, from a simple check engine light to a vehicle that won’t start at all. If you’re experiencing erratic engine behavior in your 2010-2011 SAAB 9-5 or another compatible GM vehicle, a faulty ECM is a likely culprit.
This replacement Engine Control Module, part number 12637106, is the definitive solution to get your car back on the road with confidence. We take the guesswork and hassle out of the replacement process. Unlike a generic part from a local store, this module is not just a piece of hardware. It is a complete, programmed solution. Upon purchase, you simply provide us with your vehicle’s VIN, and our expert technicians will flash the unit with the latest, most stable software updates directly from GM. This ensures perfect compatibility and optimal performance, tailored specifically to your vehicle’s factory specifications.
From the Diagnostic Bay
We had a 2011 Buick Regal come into the shop with a mysterious issue. The owner complained of intermittent stalling at stoplights and a persistent P0606 (ECM Processor Fault) code that would come and go. We checked all the usual suspects—wiring, grounds, sensors—and everything tested fine. The symptoms were so random it was maddening. We suspected the ECM was failing internally, but only under specific thermal conditions. Instead of spending more hours on diagnostics, we recommended a VIN-programmed replacement. We installed one of our pre-flashed 12637106 units, performed the security relearn, and the car ran perfectly. The customer called back a month later to say the stalling was completely gone and the car felt more responsive than ever. It’s a classic case of how a failing ECM can mimic a dozen other problems, and a properly programmed replacement is the only true fix.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light is illuminated, often with communication-related or processor fault codes.
- ✔ Engine stalling or shutting off unexpectedly while driving or idling.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Noticeable decrease in fuel economy and poor engine performance.
- ✔ Rough or inconsistent idling.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ Other warning lights on the dashboard may appear without a clear cause.
The Importance of a Programmed SAAB 9-5 Engine Control Module
In modern vehicles, the ECM is linked to multiple other modules through a complex data network. It’s not a simple plug-and-play part. A new module must be programmed with the correct software and vehicle-specific information, including the VIN, to communicate with the anti-theft system (immobilizer), transmission controller, and other components. Our service handles this critical step for you. By programming the module before shipment, we eliminate the need for expensive dealer programming or specialized scan tools. For many vehicles, installation is as simple as disconnecting the battery, swapping the module, and performing a straightforward security relearn procedure, which can often be done without any special tools.
This module is a direct replacement for multiple part numbers, including 12616889, 12630908, 12637106, 12642665, 12650256, and 12651993. It fits a wide array of GM vehicles beyond the SAAB 9-5, such as the Cadillac CTS, Chevrolet Camaro, Buick LaCrosse, and GMC Terrain. Please verify your original part number to ensure a perfect match.
Frequently Asked Questions
Do I need to send you my old ECM?
No, there is no core charge or need to send in your old part. This is an outright purchase of a replacement module that we program for you.
What information do you need from me?
After you complete your purchase, we will need your 17-digit Vehicle Identification Number (VIN). This is essential for us to load the correct software and vehicle-specific parameters into the module.
Is this part difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery and removing a few bolts and electrical connectors. However, after installation, you may need to perform a security relearn procedure (also known as a key relearn or anti-theft relearn). This procedure syncs the new ECM with your vehicle’s keys and can usually be done at home without special tools. We can provide instructions for this process.
Will this fix my car’s problem for sure?
While this SAAB 9-5 Engine Control Module is the solution for a faulty ECM, it is crucial to ensure your vehicle has been properly diagnosed. A failing ECM can mimic the symptoms of other faulty parts, such as bad sensors, wiring issues, or fuel delivery problems. We recommend a thorough diagnosis by a qualified mechanic to confirm the ECM is the root cause of your issue.
What if my part number isn’t listed but my vehicle is?
It’s critical to match the part number. GM uses many different modules with subtle hardware and software differences. Please check the number on your original module. If it matches one of the compatible numbers (12616889, 12630908, 12637106, 12642665, 12650256, 12651993), this part will work for you.