Restore Peak Performance with a VIN-Programmed Engine Computer
Dealing with erratic engine behavior, a persistent Check Engine Light, or a vehicle that simply won’t start can be incredibly frustrating. As a technician with over two decades of experience, I’ve seen firsthand how a failing Engine Control Module (ECM) can mimic a dozen other problems, leading to wasted time and money on unnecessary parts. This isn’t just a component; it’s the brain of your engine, and when it falters, your vehicle’s reliability is compromised. This is your direct-fit, reliable solution.
This listing is for a genuine service replacement Programmed ECM 12633264, which is also interchangeable with service number 12678513. The critical advantage here is our pre-programming service. Before we ship the module, we flash it with the latest GM-certified software updates, precisely matched to your vehicle using the VIN you provide. This eliminates the need for an expensive trip to the dealership for programming, making it a straightforward fix for both seasoned mechanics and capable DIY enthusiasts.
Case Study: A Tricky Diagnosis
I remember a 2013 Camaro SS that came into the shop with an intermittent stalling problem and a P0606 code (ECM/PCM Processor Fault). The owner had already replaced the throttle body and MAF sensor with no luck. After confirming solid power and ground to the computer, we knew the issue was internal to the module itself. Heat cycles and vibration had taken their toll. We installed a VIN-programmed ECM just like this one, performed the security relearn, and the car ran perfectly. It’s a classic example of why targeting the root cause with the right part saves headaches and money.
Is Your Vehicle Showing These Red Flags?
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, this module is often the solution:
- ✔ Inexplicable stalling or rough idling
- ✔ Vehicle refuses to start, but the battery and starter are good
- ✔ Decreased fuel efficiency and poor engine performance
- ✔ Communication error codes, such as U0100 (Lost Communication with ECM/PCM)
- ✔ Internal processor failure codes, including P0601, P0602, or P0606
- ✔ Check Engine Light is on with multiple, seemingly unrelated trouble codes
- ✔ Harsh or erratic automatic transmission shifting
A Straightforward Guide to Installation
Replacing your ECM is a manageable job that you can often complete in your own garage. Follow these general steps for a successful installation:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On most of these vehicles, the ECM is found in the engine compartment, often on the firewall or inner fender. Consult a repair manual for your specific model’s location.
- Disconnect Connectors: Carefully unlatch and remove all electrical connectors from the old ECM. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket and remove it from the vehicle.
- Install the New ECM: Mount your new, pre-programmed ECM onto the bracket and securely fasten it.
- Reconnect Everything: Re-attach all electrical connectors, ensuring they click securely into place. Reconnect the negative battery terminal.
- Perform Security Relearn: Many GM vehicles require a simple security relearn procedure to allow the vehicle to start. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions are readily available online for your specific model.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles. Please verify your model and engine options below to ensure a perfect fit. This is the correct Programmed ECM 12633264 for your repair.
- Cadillac CTS: 2010-2013 (6.2L), 2014 (Coupe, Sedan, SW – 6.2L), 2015 (Coupe)
- Chevrolet Camaro: 2012 (3.6L or 6.2L, ID 12633264), 2013-2015 (6.2L, VIN P)
- Chevrolet Corvette: 2010-2013 (6.2L, VIN R or T – LS9)
- Chevrolet Colorado / GMC Canyon: 2010-2012 (5.3L)
- Chevrolet Malibu: 2010-2012 (3.6L)
- Hummer H3: 2010 (5.3L)
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential. It allows us to load the exact, correct software and calibrations for your vehicle’s specific options, engine, and transmission. This ensures the module works perfectly right out of the box.
Is any additional programming required after installation?
No, this module arrives fully programmed to your VIN. The only potential step is a simple key-cycle security relearn procedure, which does not require any special tools and can be done in your driveway.
What if this doesn’t fix my problem?
While this ECM is a common solution for the symptoms listed, we always recommend proper diagnostics. If you install the part and the issue persists, the problem may lie elsewhere in the vehicle’s wiring or with another component.
Is this a new or used part?
This is a high-quality, tested, and guaranteed functional service replacement part. Each unit is inspected and programmed with the latest software to ensure reliability and performance equivalent to a new module from the dealer.
How do I send you my VIN?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot program and ship your order until we receive this information.