Restore Peak Performance to Your Vehicle’s Engine
Is your car suffering from frustrating issues like a persistent Check Engine Light, rough idling, stalling, or poor fuel economy? These are often hallmark signs of a failing Engine Control Module (ECM), the central computer that manages your engine’s performance. Don’t let a faulty ECM keep you off the road. This replacement ECM, part number 12637106, is the reliable, professional-grade solution to get your vehicle running smoothly again.
The biggest challenge with replacing an ECM has always been the expensive and complicated programming required at a dealership. We eliminate that step entirely. Before we ship your part, our technicians will flash this module with the latest official GM software, specifically matched to your vehicle using its unique VIN. This ensures perfect compatibility and function right out of the box. You’re not just getting a part; you’re getting a fully prepared, plug-and-play solution designed for a hassle-free installation.
From the Diagnostic Bay: The Intermittent Gremlin
A customer brought in a 2011 Chevy Equinox (which uses this exact ECM family) with a maddening problem: it would randomly lose power and go into limp mode, but only on hot days after driving for 30+ minutes. No consistent codes, just a history of U0100 (Lost Communication with ECM) and a P0606 (ECM Processor Fault). We checked wiring and grounds, and everything looked perfect. In my 20+ years, I’ve learned that heat-soak issues on control modules are a classic sign of internal failure. The processor on the circuit board starts to break down when it gets hot. We installed one of our VIN-programmed ECMs, and the problem was solved instantly. The customer saved hundreds compared to a dealer diagnosis and repair, and drove away with confidence.
Common Signs of a Failing Engine Computer
If you’re experiencing any of the following, a faulty ECM could be the culprit. A proper diagnosis is key, and these symptoms are strong indicators that your module needs attention.
- ✔ Check Engine Light is on with codes like P0601, P0606, or communication errors (U-codes).
- ✔ Engine cranks but refuses to start.
- ✔ Noticeable drop in fuel efficiency.
- ✔ Rough or unstable idle.
- ✔ Engine stalling or misfiring intermittently.
- ✔ Transmission shifting problems or harsh shifts.
- ✔ Failure to pass emissions testing.
A Straightforward Guide to Installation
Installing your new 2010-2011 SAAB 9-5 ECM is a manageable task for a DIYer with basic tools. Follow these steps for a successful replacement.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to ensure the system is fully discharged.
- Locate the ECM: On most compatible vehicles, the ECM is found in the engine compartment, often on the driver’s side near the air filter box or firewall.
- Disconnect Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the old module. Never force them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you may need to reuse it.
- Install the New ECM: Mount your new, pre-programmed ECM onto the bracket and securely fasten it.
- Reconnect Everything: Plug the wiring harnesses firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Final Steps: Depending on your vehicle, an idle relearn or security relearn procedure may be necessary. This can often be done without special tools (consult your vehicle’s service information). Start the vehicle and check for proper operation.
Verified Vehicle Compatibility
This module is a direct replacement for part number 12637106 and is interchangeable with part numbers 12616889, 12630908, 12642665, 12650256, and 12651993. It fits a wide range of GM vehicles. Please verify your part number or contact us with your VIN to confirm fitment.
Cadillac: CTS (2010-2012), SRX (2010-2011)
Chevrolet: Camaro (2012), Captiva Sport (2012), Equinox (2010-2011), Impala (2012), Orlando (2012-2013)
GMC: Terrain (2010-2011)
SAAB: 9-5 (2010-2011)
Note: Specific engine and option compatibility is required. The list above is a general guide.
Frequently Asked Questions
How does the programming process work?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this number to download the latest, most stable software directly from GM and load it onto the ECM before shipping.
Is any additional programming needed after I install it?
No, the core engine programming is complete. In some cases, a simple key/security relearn procedure is required, which you can typically do yourself in your driveway. We can provide instructions for this if needed.
Is this a reliable, long-term fix?
Absolutely. We supply high-quality, tested modules loaded with factory-correct software. This is the same level of repair you would receive from a dealership, designed to restore original functionality and reliability.
Will this fix my specific check engine light code?
This ECM directly resolves internal module faults, such as codes P0601 through P0606, and communication errors. If your code is for a sensor or other component, replacing the ECM will not fix it. Proper diagnosis is essential before ordering.
What if I order the wrong part?
We strongly encourage you to match your original part number or send us your VIN before ordering. Because these are programmed specifically for your vehicle, returns can be complicated. We are here to help you get the right part the first time.