Programmed 2010-2011 SAAB 9-5 ECM 12651993 | VIN Matched | GM Updates

Restore Peak Performance and Reliability to Your Vehicle

As a technician with over two decades of experience under the hood, I’ve seen firsthand the frustration that a failing Engine Control Module (ECM) can cause. You’re dealing with a persistent Check Engine Light, unpredictable stalling, poor fuel economy, or even a vehicle that refuses to start. These aren’t just annoyances; they’re signs that your vehicle’s brain is struggling. This Engine Control Module, part number 12651993, is the definitive solution to get your car running correctly again.

The ECM is the central command center for your engine, managing everything from fuel injection and ignition timing to emissions systems and transmission shifting. When it fails, the symptoms can be widespread and confusing. We take the guesswork and hassle out of the replacement process. Unlike a generic part from a big box store, this ECM is not just a component—it’s a complete service. Before we ship it, our experts will program the module with the latest GM factory software, specifically matched to your vehicle’s unique VIN. This ensures seamless communication between the new ECM and all other modules in your car, restoring its original performance and efficiency.

From the Diagnostic Bay: The Ghost in the Machine

I once had a 2011 Chevy Equinox in the shop that was a real head-scratcher. The customer complained of intermittent stalling at stoplights and a check engine light that three other shops couldn’t fix. They had already replaced the spark plugs, an O2 sensor, and even the fuel pump. The scan tool showed a mix of communication codes (U0100) and a generic random misfire. My experience pointed towards the ECM, but without a hard failure code like a P0606, it was tough to condemn. We decided to try a known-good, properly programmed ECM. After installing this exact type of module, programmed to the vehicle’s VIN, the ghost was gone. The Equinox ran perfectly, the codes never returned, and the customer was thrilled. It’s a powerful reminder that having the correct, updated software is just as critical as the part itself.

Is Your Vehicle Showing These Symptoms?

A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need. Don’t let these issues sideline your vehicle any longer.

• ✔ Persistent Check Engine Light (CEL)
• ✔ Engine stalling or misfiring unpredictably
• ✔ Vehicle won’t start, but the battery and starter are good
• ✔ Noticeable decrease in fuel efficiency (MPG)
• ✔ Harsh or erratic automatic transmission shifting
• ✔ Communication error codes, such as U0100
• ✔ Internal module memory or processor error codes (e.g., P0601, P0602, P0606)
• ✔ Failure to pass state emissions testing

A Straightforward Guide to Installation

Replacing your ECM is a manageable job for a confident DIYer. Our pre-programming service handles the most complex step, saving you a trip to the dealership. Follow these general steps for a successful installation.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system capacitors to discharge.
2. Locate the ECM: On most compatible vehicles, the ECM is found in the engine compartment, often near the air filter box or on the firewall. Refer to a vehicle-specific service manual if you’re unsure.
3. Disconnect Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the module. Never force them. Inspect the pins for any corrosion or damage.
4. Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you may need it for the new module.
5. Install the New Module: Mount the new, pre-programmed ECM in place and secure it with the original hardware.
6. Reconnect Everything: Plug the wiring harness connectors firmly into the new module until they click into place. Reconnect the negative battery terminal.
7. Perform Security Relearn: In many GM vehicles, you will need to perform a security or anti-theft relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-12 minutes, then ‘OFF’ for 30 seconds, and repeating this cycle three times. Your vehicle’s service manual will have the precise steps.

Verified Vehicle Compatibility

This module is a direct replacement for multiple part numbers and fits a wide range of GM vehicles. Please confirm your vehicle is on this list and provide your VIN upon purchase for correct programming. This part fits models with part numbers 12616889, 12630908, 12637106, 12642665, 12650256, and 12651993.

• ✔ 2010-2011 SAAB 9-5 (2.0L)
• ✔ 2010 Buick Allure / LaCrosse (2.4L, 3.0L)
• ✔ 2011 Buick LaCrosse (2.4L)
• ✔ 2011 Buick Regal
• ✔ 2012 Chevrolet Camaro (3.6L)
• ✔ 2012 Chevrolet Captiva Sport
• ✔ 2010-2011 Chevrolet Equinox
• ✔ 2012 Chevrolet Impala
• ✔ 2012-2013 Chevrolet Orlando
• ✔ 2010-2012 Cadillac CTS (3.0L, 3.6L)
• ✔ 2010-2011 Cadillac SRX (3.0L)
• ✔ 2010-2011 GMC Terrain