Restore Peak Performance to Your Cadillac SRX
Is your 2013-2016 Cadillac SRX experiencing perplexing issues like random stalling, a persistent check engine light, poor fuel economy, or erratic shifting? These are classic signs of a failing Engine Control Module (ECM), the central computer that manages your vehicle’s engine performance, fuel delivery, and emissions systems. A malfunctioning ECM can turn your luxury crossover into an unreliable and frustrating vehicle. This genuine used OEM ECM, part number 12644446, is the definitive solution to restore your vehicle’s factory performance and reliability.
The Brains of Your Engine: Why the ECM is Crucial
The ECM in your SRX is a sophisticated computer that processes data from dozens of sensors throughout your vehicle. It constantly adjusts parameters like fuel injector timing, spark advance, and throttle position to ensure optimal power, efficiency, and low emissions. When it fails, the entire system can be compromised, leading to a cascade of performance problems. Replacing it with a generic, unprogrammed unit from a local parts store often leads to more headaches, requiring expensive dealership visits for programming and security relearns. Our service eliminates that step entirely.
From the Diagnostic Bay
We once had a 2014 SRX come in with a no-start condition. The owner had already replaced the battery and starter based on advice from a forum. The vehicle would crank but never fire up. After connecting our diagnostic scanner, we saw no communication with the ECM. Before condemning the module outright, we checked the basics. We found a corroded ground wire connection near the engine block that was barely making contact. After cleaning and securing the ground, the vehicle started perfectly. This is a crucial reminder: always verify power and ground connections to the ECM before replacement. A simple wiring issue can mimic a complete module failure, saving you hundreds of dollars.
Common Symptoms of a Failing SRX ECM
- âś” Persistent Check Engine Light (CEL) with various trouble codes.
- âś” Engine stalling or shutting off unexpectedly while driving.
- âś” Noticeable decrease in fuel efficiency.
- âś” Rough idling, misfires, or hesitation during acceleration.
- âś” Harsh or erratic automatic transmission shifting.
- âś” Complete no-start condition where the engine cranks but won’t fire.
- âś” Communication errors with diagnostic scan tools.
Your Plug-and-Play Solution: The 2013-2016 SRX ECM
We make this repair process simple and straightforward. This isn’t just a part in a box; it’s a complete solution. Before we ship this module, we program it specifically to your vehicle’s unique Vehicle Identification Number (VIN). This service ensures that the ECM is loaded with the latest GM software updates and is perfectly matched to your SRX’s specific options and configuration. The result is a true plug-and-play installation. Simply disconnect your battery, swap the modules, reconnect the battery, and you’re ready to go. No additional programming or dealer intervention is required.
This ECM is a direct replacement for several part numbers, including 12653998, 12633555, 12655007, and 12644446. It has been carefully sourced from a salvaged vehicle and tested for functionality, providing a reliable and cost-effective alternative to a brand-new, expensive dealership part. By choosing this quality used 2013-2016 SRX ECM, you are getting an authentic GM component that is ready to restore the precise, smooth operation you expect from your Cadillac.
Frequently Asked Questions
What does ‘VIN Programmed’ mean?
VIN programming means we flash the module with your vehicle’s specific software from GM’s database. This ensures the ECM recognizes your engine, transmission, and security system, making it a plug-and-play part. You must provide your VIN at checkout for this essential service.
Will I need to perform any other procedures after installation?
In most cases, no. Our programming handles the critical setup. However, some vehicles may require a simple throttle body relearn or crankshaft position sensor variation relearn, which can often be done without special tools by following a specific driving cycle. Your mechanic will be familiar with these minor procedures if they are needed.
Is this a new part?
No, this is a genuine, used OEM part that has been sourced from a properly functioning, salvaged vehicle. Each unit is inspected to ensure it is a reliable and economical solution for your repair.
How do I find my original part number to confirm a match?
Your original ECM’s part number is printed on a sticker directly on the module’s case. The module is typically located in the engine compartment on the driver’s side. Comparing this number to our list (12653998, 12633555, 12655007, 12644446) is the best way to ensure compatibility.
Does this part fit other GM vehicles?
Yes, this ECM is compatible with a wide range of GM vehicles from the same era, including the Acadia, Traverse, Enclave, Malibu, and Impala, among others. Please refer to the detailed fitment list on this page and verify your part number to guarantee it is correct for your specific make, model, and engine.