Is your 2009 SAAB 9-7X or other GM vehicle suffering from frustrating, intermittent issues like stalling, poor fuel economy, or a persistent check engine light? A failing Engine Control Module (ECM) is often the culprit behind these phantom problems. As the brain of your vehicle’s engine management system, a faulty ECM can disrupt everything from fuel delivery and spark timing to transmission shifting. This isn’t just an inconvenience—it’s a critical component failure that can leave you stranded.
This replacement Engine Control Module, part number 12628993, is the definitive solution. We take the guesswork and high costs out of the repair by professionally programming the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means you receive a component loaded with the latest GM software updates, ready for a straightforward installation. You get restored performance and reliability without the expensive trip to a dealership for programming.
Key Signs of a Failing Engine Computer
- ✔ Your vehicle fails to start or starts intermittently.
- ✔ Unexplained drop in fuel efficiency and engine performance.
- ✔ The engine stalls, stumbles, or misfires for no apparent reason.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The check engine light is on with internal processor codes like P0601, P0606, or P0605.
- ✔ Loss of communication codes (U-codes) stored in other modules.
From the Diagnostic Bay: The Hummer That Wouldn’t Communicate
A few months back, a 2009 Hummer H3 was towed into my shop. The owner was frustrated; it would crank but not start, and his local mechanic had already replaced the fuel pump and crank sensor. My initial scan showed a slew of U-codes—no communication with the ECM. Instead of just throwing parts at it, I checked the basics: power and ground at the ECM connector. They were perfect. This told me the module itself was likely the point of failure. We ordered a pre-programmed 2009 SAAB 9-7X Engine Module (which cross-references to the H3) for the customer. After a 15-minute install and a quick security relearn, the truck fired up on the first try and ran perfectly. It’s a classic case where pinpoint diagnostics and a quality part saved the customer hundreds in unnecessary repairs.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- ✔ Locate the ECM: On the 2009 SAAB 9-7X, the ECM is typically found in the engine bay on the driver’s side (LH engine). Consult a service manual for the exact location on other compatible models.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that may need to be released. Once disconnected, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Bolt the new, pre-programmed ECM into place. Reconnect the electrical harnesses, ensuring they click securely into position.
- ✔ Reconnect Battery: Reattach the negative battery terminal.
- ✔ Perform Security Relearn: Most GM vehicles require a simple security relearn procedure. Typically, this involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. The vehicle should then start.
Will This Fit My Vehicle?
This module is a direct replacement for a wide range of GM vehicles. Please verify your model and options below. This part is interchangeable with service numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512.
- ✔ SAAB 9-7X 2009 (LH engine)
- ✔ CADILLAC CTS 2009 (6.2L)
- ✔ CADILLAC DTS 2009-2011
- ✔ CADILLAC SRX 2009 (4.6L)
- ✔ CADILLAC STS 2009 (4.4L, 4.6L), 2010 (4.6L)
- ✔ CADILLAC XLR 2009
- ✔ CHEVROLET COLORADO 2009-2012 (2.9L, 3.7L)
- ✔ CHEVROLET CORVETTE 2009 (ZR1)
- ✔ CHEVROLET TRAILBLAZER 2009 (6.0L)
- ✔ GMC CANYON 2009-2012 (2.9L, 3.7L)
- ✔ GMC ENVOY 2009 (5.3L)
- ✔ HUMMER H3 2009-2010 (3.7L)
- ✔ BUICK LUCERNE 2009-2011 (4.6L)
Frequently Asked Questions
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive this information.
Is any additional programming required after installation?
No. We flash the module with the latest GM software matched to your VIN. However, you will likely need to perform a simple security/theft-deterrent relearn procedure, which takes about 30 minutes and does not require any special tools.
Is this a used part?
This is a high-quality, tested, and verified recycled OEM part. Each unit is inspected and programmed to ensure it meets or exceeds original factory performance specifications.
What if my part number is slightly different?
This module is directly interchangeable with several service numbers, including 12636659, 12628993, and others listed above. As long as your vehicle is on the compatibility list, this module will function correctly.
Will this fix my check engine light?
If the check engine light is caused by an internal ECM failure (like codes P0601-P0606), this part will resolve the issue. It’s crucial to properly diagnose the vehicle first, as other sensor or wiring failures can also cause a check engine light.
Where is the 2009 SAAB 9-7X Engine Module located?
On the 2009 SAAB 9-7X, the engine control module is typically located on the driver’s side of the engine compartment, mounted near the firewall or inner fender.