Restore Your Vehicle’s Brain and Get Back on the Road
Dealing with erratic engine behavior, a persistent Check Engine Light, or a car that won’t start can be incredibly frustrating. As a technician with over two decades of experience, I’ve seen firsthand how a failing Engine Control Module (ECM) can cause a host of baffling problems. The ECM is the central computer of your engine, managing everything from fuel mixture and ignition timing to transmission shifts. When it fails, your vehicle’s performance and reliability are compromised. This isn’t just an inconvenience; it’s a critical failure that needs a reliable solution.
This is a direct-fit replacement Engine Control Module for your 2010-2011 SAAB 9-5 and a wide range of other GM vehicles. The best part? We take the biggest headache out of the equation. Forget expensive dealership visits for programming. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout, and our experts will flash this module with the latest, most stable GM software specific to your car. It arrives at your door ready for a straightforward, plug-and-play installation, saving you hundreds in potential labor and programming fees.
From the Diagnostic Bay
I remember a 2012 Chevy Equinox that came into my shop. The owner had already replaced the fuel pump and a couple of sensors trying to chase down an intermittent stalling issue. The car would run fine for days, then suddenly die at a stoplight. No specific codes were stored, just a generic U0100 ‘Lost Communication with ECM’ every once in a while. After checking the wiring harness and power/ground circuits to the ECM, we connected a scope. We saw the 5-volt reference signal dropping out unpredictably. It was a classic case of an internally failing ECM. We installed a VIN-programmed module just like this one, and the Equinox ran perfectly. This simple swap saved the customer from more guesswork and unnecessary parts expenses.
Is Your Vehicle Showing These ECM Failure Signs?
- ✔ Check Engine Light is on with codes pointing to internal module failure (e.g., P0601, P0606).
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained stalling or rough idling.
- ✔ Noticeable drop in fuel economy.
- ✔ Poor engine performance, hesitation, or misfires.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ Loss of communication with the scan tool or other modules (U-codes).
- ✔ Failure to pass an emissions test due to module-related faults.
A Straightforward Guide to Installation
Replacing your 2010-2011 SAAB 9-5 ECM is easier than you might think. Because this module comes pre-programmed, you won’t need any special diagnostic tools for the installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure the system is fully discharged.
- Locate the ECM: On most compatible vehicles, the ECM is found in the engine compartment. For the SAAB 9-5, it’s typically on the left-hand (driver’s) side. Refer to your owner’s manual if you’re unsure.
- Disconnect the Old Module: Carefully unplug the electrical connectors from the old ECM. They have locking tabs that need to be released. Note their orientation.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place.
- Reconnect Everything: Firmly plug the electrical connectors into the new module. They are keyed to only fit one way. Reconnect the negative battery terminal.
- Final Check: Turn the key to the ‘On’ position for 10-15 seconds before starting the engine. This allows the other modules to recognize the new ECM. Start your vehicle and enjoy restored performance!
Verified Compatibility Across GM & SAAB Models
This module is a direct replacement for part numbers 12616889, 12630908, 12637106, 12642665, 12650256, and 12651993. It is guaranteed to fit the following vehicles:
ALLURE (2010) – 2.4L & 3.0L
LACROSSE (2010-2011) – 2.4L
LACROSSE (2010) – 3.0L
REGAL (2011)
Cadillac:
CTS (2010-2012) – 3.0L
CTS (2012) – 3.6L
SRX (2010-2011) – 3.0L
Chevrolet:
CAMARO (2012) – 3.6L
CAPTIVA SPORT (2012)
EQUINOX (2010-2011)
IMPALA (2012)
ORLANDO (2012-2013)
GMC:
TERRAIN (2010-2011)
SAAB:
9-5 (2010-2011) – 2.0L (VIN R, 8th digit, opt LHU)
Frequently Asked Questions About This ECM
Does this ECM require any additional programming?
No. We program the module to your vehicle’s specific VIN before shipping. It is ready for installation right out of the box, with no need for a trip to the dealer or a mechanic with special tools.
What is a VIN and where do I find it?
The VIN is your car’s 17-digit Vehicle Identification Number. It’s like a fingerprint for your car. You can easily find it on the driver’s side of the dashboard (visible through the windshield) or on the sticker in the driver’s side door jamb.
Is this a brand new part?
This is a high-quality, tested, and verified replacement part that meets or exceeds original equipment specifications. It is loaded with new, updated software from GM to ensure optimal performance.
Will this fix my car’s specific problem?
This ECM will correct issues directly caused by a faulty engine computer, such as the symptoms listed above. While it is a common failure point, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the root cause of your problem before purchasing.
What if I order the wrong part?
Providing your VIN is crucial as it allows us to verify fitment and program the unit correctly, which virtually eliminates the chance of receiving the wrong part. Please double-check your part number and vehicle information before ordering.