Restore Peak Performance to Your 2012 Cadillac SRX
Is your 2012 Cadillac SRX suffering from erratic behavior, a persistent check engine light, or a no-start condition? The Engine Control Module (ECM) is the central computer of your vehicle, orchestrating everything from fuel injection and spark timing to transmission shifts and emissions control. When it fails, it can cause a wide range of frustrating and difficult-to-diagnose issues. This replacement ECM, part number 12651994, is the definitive solution to get your vehicle back on the road, running as it should.
Unlike a generic part from a local store, this module isn’t just a piece of hardware. It’s a complete, plug-and-play solution. We professionally program the unit with the latest official GM software updates specifically for your vehicle using the VIN you provide. This critical step ensures perfect communication between the ECM and all other vehicle systems, eliminating the need for expensive dealership programming or specialized tools. Upon arrival, it’s ready for a straightforward installation.
From the Diagnostic Bay
We had a 2012 Cadillac SRX come into the shop that was giving the owner fits. It would randomly stall at red lights and sometimes wouldn’t start for hours. The owner had already replaced the crankshaft position sensor and a throttle body based on generic codes, with no success. After hooking up our professional scan tool, we noticed the 5-volt reference signal to several sensors was dropping out intermittently. Instead of continuing to replace parts, we went straight to the source. A faulty ECM was causing the voltage drop. Installing a pre-programmed module like this one solved the issue in under an hour, saving the customer from further guesswork and expensive part-swapping.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) with codes related to internal module failure (e.g., P0600-P0606).
- ✔ Engine stalling or misfiring for no apparent reason.
- ✔ Complete no-start condition where the engine cranks but won’t fire up.
- ✔ Noticeable decrease in fuel economy and poor engine performance.
- ✔ Issues with the automatic transmission, such as harsh or erratic shifting.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Other seemingly unrelated warning lights appearing on the dash.
Why a VIN-Programmed 2012 SRX ECM is Essential
Modern vehicles like your Cadillac SRX have complex, interconnected electronic systems. The ECM must be programmed with the vehicle’s specific Vehicle Identification Number (VIN) to function correctly. This process loads the correct software, calibrations for the engine and transmission, and security information (anti-theft). Our service handles this for you. By providing your VIN during checkout, you receive a unit that is perfectly matched to your vehicle’s factory specifications. This ensures a seamless installation and avoids the common pitfalls of using a non-programmed or incorrectly programmed module.
This ECM is a direct replacement for multiple GM part numbers, including 12651994, 12643248, and 12652814. It fits a wide array of GM vehicles beyond the SRX, such as the Chevrolet Camaro, GMC Acadia, Buick LaCrosse, and more. Please verify your original part number or consult the fitment list to ensure compatibility.
Frequently Asked Questions
Is this ECM ready to install right out of the box?
Yes. This module is fully programmed to your vehicle’s specific VIN before it ships. This makes it a true plug-and-play part, requiring no additional programming or trips to the dealership. An idle relearn or security relearn procedure may be required, which can typically be done without special tools.
Where do I find my vehicle’s VIN?
Your 17-digit VIN can be found on a metal plate on the driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
What happens if I forget to provide my VIN?
We cannot ship your part without a VIN. The programming is essential for the part to function in your vehicle. Our team will contact you after your purchase to retrieve the VIN if it was not provided at checkout, which may delay your order.
How can I be sure my old ECM is the problem?
While the symptoms listed are common indicators, a thorough diagnosis is always recommended. This includes checking all power and ground connections to the ECM, verifying sensor inputs, and scanning for specific diagnostic trouble codes (DTCs). Codes in the P06xx range often point directly to an internal module fault. If you’re unsure, consulting a professional technician is a good idea.
Does this part fit other vehicles besides the 2012 SRX?
Absolutely. This ECM is compatible with a wide range of GM models from roughly 2012-2016, including the Cadillac CTS, Chevrolet Impala, GMC Terrain, Buick Verano, and more. Please check the compatibility list and match your original part number (12651994, 12643248, or 12652814) to confirm fitment.