Is Your Cadillac CTS Stalling, Running Rough, or Refusing to Start?
If you’re dealing with frustrating and unpredictable engine problems in your 2010-2012 Cadillac CTS, a failing Engine Control Module (ECM) is a very likely culprit. As a mechanic with over two decades of experience, I’ve seen these symptoms countless times: the check engine light that won’t go away, sudden stalling at intersections, poor fuel economy, and communication errors that leave even experienced technicians scratching their heads. You need a solution that’s not just a part, but a complete fix.
Expert Pro Tip: Check Your Connections First
Before you install your new ECM, take a minute to closely inspect the wiring harness connectors that plug into the module. Over time, moisture and heat can cause corrosion on the pins, leading to a poor connection that can mimic ECM failure or even damage the new part. I recommend using a quality electronic contact cleaner and a small nylon brush to gently clean both the male and female ends of the connectors. A clean, solid connection is critical for the long-term health of your vehicle’s electronics.
The Plug-and-Play Solution: A Pre-Programmed 2010-2012 CTS ECM
Forget the hassle and expense of a dealership visit. This Engine Control Module is the definitive solution, arriving at your door fully programmed and ready for installation. We take the guesswork out of the repair by using your vehicle’s VIN to flash the module with the latest, most stable software updates directly from GM. This ensures your vehicle operates exactly as the manufacturer intended, restoring performance, reliability, and fuel efficiency.
- โ VIN-Programmed for Your Vehicle: We load the latest GM software specific to your car, ensuring perfect compatibility and function.
- โ No Dealer Visit Required: This module is 100% plug-and-play. Install it yourself and get back on the road.
- โ Solves Common Failure Points: Directly addresses issues like no-start conditions, random stalling, communication error codes, and persistent check engine lights.
- โ Direct-Fit Replacement: Guaranteed to fit and function correctly, replacing a wide range of original part numbers.
Easy Installation Guide: Get Your CTS Running Right
You don’t need to be a master mechanic to replace this module. For the 2010-2012 CTS, the ECM is located in the right-hand front of the engine compartment. Follow these simple steps:
- Safety First: Always disconnect the negative terminal from your car’s battery and wait about 10 minutes for the system to fully discharge.
- Locate the ECM: Find the module on the passenger side of the engine bay. It will have several large electrical connectors attached.
- Disconnect the Connectors: Carefully unlatch and remove the wiring harness connectors. Be gentle, as the locking tabs can become brittle over time.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed ECM into place.
- Reconnect Everything: Securely plug the wiring harness connectors into the new module until they click. Reconnect your battery terminal.
- Final Step: Start the vehicle. It may run slightly rough for the first few seconds as the system performs a self-check. Let it idle for a few minutes to complete the relearn process.
Guaranteed Compatibility
This module is a direct replacement for a wide array of GM vehicles and is guaranteed to be compatible if your original part number is on this list:
Interchangeable Part Numbers: 12616889, 12630908, 12637106, 12642665, 12650256, 12651993
This part is a confirmed fit for many models including the Cadillac CTS, SRX, Buick Allure, LaCrosse, Regal, Chevrolet Camaro, Impala, Captiva Sport, Equinox, Orlando, Terrain, and Saab 9-5. Please verify your vehicle in the fitment chart to ensure a perfect match. Simply provide us with your VIN after purchase, and we’ll handle the rest.