Is your vehicle suffering from frustrating, intermittent issues that seem impossible to diagnose? An erratic idle, sudden stalling, a no-start condition, or a persistent Check Engine Light can often be traced back to one component: a failing Engine Control Module (ECM). As the central computer for your engine, when the ECM begins to fail, it can cause a cascade of problems that leave you stranded and facing a costly dealership repair bill. I’ve seen it hundreds of times in my 20+ years in the shop—a perfectly good engine crippled by a faulty computer.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and hassle out of the repair by pre-programming this 2009 SRX Engine Module specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the unit with the latest, most stable software updates directly from GM. This ensures perfect compatibility and optimal performance, eliminating the need for an expensive trip to the dealership for programming.
A Technician’s Notebook
I remember a 2010 Chevy Colorado that came into the bay with a complaint of random stalling at traffic lights. The owner had already replaced the fuel pump and cleaned the throttle body, but the problem persisted. No clear trouble codes were stored, just a history of communication loss faults (U-codes). After checking all the wiring, we suspected the ECM. We swapped in a VIN-programmed module like this one, and the truck ran perfectly. The internal processor on the original ECM was failing under heat, a common issue I’ve seen on these units. This simple swap saved the customer from chasing phantom electrical gremlins for weeks.
Is Your GM Vehicle Showing These ECM Failure Signs?
- ✔ Unexplained Check Engine Light with codes like P0601, P0606, or P060A (Internal Control Module Processor errors).
- ✔ Complete no-start or no-spark condition, even with a good battery and starter.
- ✔ Intermittent stalling or engine hesitation while driving.
- ✔ Poor fuel economy and a noticeable loss of power.
- ✔ Communication errors with scan tools or other vehicle modules (U-codes).
- ✔ Harsh or incorrect automatic transmission shifting.
By choosing this professionally programmed 2009 SRX Engine Module, you are restoring the core of your vehicle’s engine management system. It’s a direct-fit replacement for part number 12625453 and several other interchangeable service numbers, ensuring a reliable and long-lasting repair.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the ECM: On the 2009 SRX, the ECM is typically found in the LH (driver’s side) of the engine compartment. Location varies on other models (see fitment list).
- ✔ Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. They have locking tabs that may need to be gently pried up.
- ✔ Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you will reuse it.
- ✔ Install the New Module: Mount your new, pre-programmed ECM onto the bracket and securely fasten it.
- ✔ Reconnect and Secure: Plug the wiring harnesses firmly into the new module until they click into place. Reconnect the negative battery terminal.
- ✔ Final Step: Your vehicle may require a security relearn procedure, which can often be done without special tools by cycling the key. Consult your owner’s manual for specific instructions.
Verified Vehicle Compatibility
This module is a guaranteed fit for a wide array of GM vehicles. Please verify your model and engine below. This part is a direct replacement for service numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, 12630464, and 12678512.
- ✔ Buick DTS: 2009-2011
- ✔ Buick Lucerne: 2009-2011 (4.6L)
- ✔ Cadillac CTS: 2009 (6.2L)
- ✔ 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)
- ✔ Saab 9-7x: 2009
Frequently Asked Questions About This ECM
Frequently Asked Questions
Do I need to do any additional programming after installation?
No. We flash the module with your car’s specific VIN and the latest GM software before shipping. In most cases, it is a plug-and-play installation, though some vehicles may require a simple key-cycle security relearn procedure.
How do I provide my VIN?
You can enter your 17-digit VIN in the notes section during checkout or send it to us in a message after your purchase. We cannot ship the part until we receive your VIN.
What if my original part number is slightly different?
This module is interchangeable with a wide range of service numbers listed above. As long as your vehicle is on the compatibility list, this module will function correctly once programmed to your VIN.
Will this fix my vehicle’s problem for sure?
This part corrects issues caused by a faulty ECM. While the symptoms listed are very common for ECM failure, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the point of failure before ordering.
Where can I find my VIN?
Your VIN is located on a metal tag on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, and on your vehicle’s registration and insurance documents.