Is Your 3.6L GM Vehicle Running Rough?
If your 2008-2009 Chevrolet Equinox, Pontiac Torrent, Cadillac CTS, or SRX is experiencing frustrating issues like stalling, poor fuel economy, a persistent check engine light, or a complete no-start condition, the problem may lie with a failing Engine Control Module (ECM). The ECM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it starts to fail, it can cause a cascade of problems that are often difficult to diagnose.
Don’t let a faulty computer keep your vehicle off the road. This is a genuine, used GM Engine Control Module (part number 12623327, also compatible with 12614423 and 12619582) that has been meticulously tested and is ready for installation. The critical difference with our service is that we professionally program the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures compatibility and proper function, saving you a costly trip to the dealership for programming.
From the Diagnostic Bay
We had a 2008 Cadillac SRX with the 3.6L V6 come into the shop on a tow truck. The customer said it would crank but never start, and when it did run, it would shut off randomly at stoplights. They had already replaced the battery and alternator with no luck. We hooked up our scanner and found multiple communication error codes with the ECM and other modules. After verifying power and ground to the computer were solid, we knew we were dealing with an internal ECM failure. Instead of a new, expensive unit from the dealer, we sourced a quality used module like this one. We programmed it to the car’s VIN, performed the security relearn procedure, and the SRX fired right up and ran perfectly. It’s a common failure point, but a straightforward fix with the right part and preparation.
Common Symptoms of a Failing 2008-2009 Equinox ECM
A failing engine computer can manifest in various ways. If you’re experiencing any of the following, it’s a strong indicator that your ECM may need replacement:
- ✔ Check Engine Light: The light is on, and you may have codes related to module communication (U-codes), sensor reference voltage, or processor performance.
- ✔ No-Start or Hard-Start: The engine cranks but refuses to start, or takes an unusually long time to fire up.
- ✔ Poor Engine Performance: Noticeable loss of power, hesitation during acceleration, and rough idling.
- ✔ Reduced Fuel Economy: A sudden and unexplained drop in your vehicle’s MPG can be a sign the ECM is not managing the fuel system correctly.
- ✔ Intermittent Stalling: The engine shuts off unexpectedly while driving or when coming to a stop.
- ✔ Transmission Shifting Issues: The ECM communicates with the transmission controller, and a fault can lead to harsh or erratic shifting.
A Plug-and-Play Solution for Your Vehicle
This isn’t just a part; it’s a complete solution. By providing us with your VIN during checkout, you receive a module that is flashed with the latest GM-certified software for your exact vehicle configuration. This process ensures all factory parameters are correctly loaded, making the installation process as smooth as possible. While this module is pre-programmed, please be aware that on many GM vehicles, a security relearn procedure (often called a Passlock or anti-theft relearn) may be required after installation. This procedure can typically be done without special tools and involves a sequence of key cycles. Instructions are widely available online or in service manuals.
This module is a direct fit for a range of GM vehicles equipped with the 3.6L engine, including:
- 2008-2009 Chevrolet Equinox (3.6L)
- 2008-2009 Pontiac Torrent (3.6L)
- 2008-2009 Cadillac SRX (3.6L)
- 2008-2009 Cadillac CTS (3.6L, VIN 7)
- 2008-2009 Pontiac G8 (3.6L)
Restore your vehicle’s performance and reliability today with a quality, VIN-programmed 2008-2009 Equinox ECM. Get back on the road with confidence.
Frequently Asked Questions
Do I need to send you my old computer?
No, there is no core charge or need to send your original ECM to us. This is an outright purchase, making the process faster and more convenient for you.
What information do you need to program the ECM?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN). You can typically find this on your driver’s side dashboard (visible through the windshield), on the driver’s door jamb sticker, or on your vehicle’s registration and insurance documents. Please provide the VIN during or after checkout.
Is this a new part?
This is a high-quality, genuine GM part that has been sourced from a salvaged vehicle. Each unit is thoroughly inspected and tested to ensure it is in excellent working condition before being programmed and shipped.
Will I need to do anything else after installing this ECM?
While the module is programmed to your VIN for engine and transmission operation, you may need to perform a security relearn procedure. This syncs the new ECM with your vehicle’s anti-theft system. This procedure typically takes 10-30 minutes and can be done by the owner without any special tools. In some cases, a Crankshaft Position Sensor relearn may also be needed, which requires a capable scan tool.
How do I know if this part number is correct for my vehicle?
This ECM, part number 12623327, is a direct replacement for service numbers 12614423 and 12619582. Please check the fitment list provided on this page. If your vehicle make, model, year, and engine match the list, this is the correct part for you. Programming to your VIN ensures it works perfectly.