Restore Your Cadillac ELR’s Performance and Reliability
Is your 2014-2016 Cadillac ELR experiencing frustrating issues like a persistent check engine light, erratic performance, or even a no-start condition? The Engine Control Module (ECM) is the central computer of your vehicle, and when it begins to fail, it can cause a host of problems that are difficult to diagnose. This isn’t just another part; it’s the brain of your vehicle’s advanced powertrain, and getting it right is critical. We offer a dependable, straightforward solution: a genuine GM Engine Control Module, part number 12692200, professionally programmed to your vehicle’s specific VIN.
Forget expensive dealership visits and the hassle of post-installation programming. We handle the critical software flashing process before we ship the part to you. By providing us with your VIN during checkout, you’ll receive a module loaded with the latest GM-certified software updates. This ensures perfect compatibility and restores the precise performance, fuel efficiency, and emissions control your ELR was designed to deliver. This is the most effective way to solve complex electronic issues and get your vehicle running smoothly again.
Case Study: The Ghost in the ELR
A customer brought a 2015 ELR into the shop with a truly baffling issue. It would randomly stall at low speeds and occasionally refuse to start, but without a consistent Check Engine Light. We scanned it and found a slew of intermittent communication codes (U-codes) between the hybrid controller and the engine module. After checking all the wiring and connectors, which were perfect, we focused on the ECM. On the surface, it seemed fine, but under load, the processor was faulting internally. We installed a VIN-programmed 2014-2016 ELR Engine Control Module, and the problems vanished instantly. It’s a classic example of how a failing ECM can create ghost-like symptoms that defy simple diagnosis.
Is Your ELR Exhibiting These Symptoms?
A failing ECM can manifest in various ways. If you’re noticing any of the following, it’s a strong indicator that your engine computer may need replacement:
- ✔ Check Engine Light is illuminated with codes like P0601, P0606 (Internal Control Module Failure) or U0100 (Lost Communication With ECM/PCM).
- ✔ The engine cranks but refuses to start.
- ✔ Noticeable decrease in fuel economy.
- ✔ The engine runs rough, misfires, or stalls unexpectedly.
- ✔ Failure to pass state emissions testing.
- ✔ Automatic transmission shifting issues or erratic behavior.
A Straightforward Guide to Your ECM Installation
Installing your new ECM is a manageable job for a confident DIYer or any professional technician. With our pre-programming, you eliminate the most complex step.
- Safety First: Always disconnect the negative terminal from your vehicle’s 12V battery and wait at least 10 minutes for the system capacitors to discharge.
- Locate the Module: On the 2014-2016 Cadillac ELR, the Engine Control Module is located in the left-hand rear of the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be released first. Then, unbolt the module from its mounting bracket.
- Install the New ECM: Mount the new module securely onto the bracket and reconnect the electrical harnesses. Ensure they click firmly into place.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Relearn Procedure: In many cases, a security relearn procedure (often called a Passlock or anti-theft relearn) is required. This can typically be done without special tools and involves a sequence of key cycles. Instructions are widely available online for your specific model.
Verified Fitment Across Multiple GM Platforms
This module, identified by part number 12692200 and its alternates (12668866, 12668994, 12643636, etc.), is compatible with a wide range of GM vehicles. Please verify your part number or contact us with your VIN to ensure 100% compatibility. Key models include:
- Cadillac ELR: 2014-2016
- Chevrolet Volt: 2011-2015
- Chevrolet Cruze: 2012-2016 (1.4L & specific IDs)
- Chevrolet Sonic: 2012-2016 (1.4L & specific IDs)
- Chevrolet Trax: 2013-2016
- Chevrolet Spark: 2014-2015 (Gasoline)
- Buick Encore: 2013-2016 (1.4L & specific IDs)
- Chevy Express / GMC Savana Vans: 2016 (4.8L, 6.0L)
- Chevy Silverado / GMC Sierra HD Pickups: 2012-2016 (6.0L)
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to flash the ECM with the exact software calibration GM specifies for your ELR’s unique configuration, including emissions, transmission, and other options. This ensures it works perfectly right out of the box.
Is this a plug-and-play part?
Because we program it to your VIN, it’s about as close to plug-and-play as you can get. However, most GM vehicles will require a simple security relearn procedure after installation to sync the new ECM with the anti-theft system. This procedure does not require a scan tool.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the original ECM (e.g., codes P0601-P0606), then yes, this part is the correct fix. It’s crucial to properly diagnose the issue first, as other faulty sensors or wiring could also trigger a warning light.
What if I have a different part number on my old module?
The listing includes several interchangeable part numbers (like 12668866, 12643636, etc.). As long as your original part number is on our list, this module is the correct replacement. GM often consolidates multiple part numbers into one service replacement.