Restore Your Vehicle’s Core Performance and Reliability
Is your 2012 Chevrolet Captiva Sport or other GM vehicle acting up? Frustrating issues like a persistent check engine light, sudden stalling, poor fuel economy, or a complete no-start condition often point to one critical component: the Engine Control Module (ECM). As the central computer of your vehicle, a failing ECM can create a diagnostic nightmare, throwing misleading codes and causing unpredictable behavior. This isn’t just an inconvenience; it’s a reliability issue that can leave you stranded. Stop chasing symptoms and address the root cause with a dependable, correctly programmed replacement.
This isn’t just a part in a box. This is a complete solution. We provide a high-quality replacement Engine Control Module, part number 12637106, that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the computer has the latest GM software updates and is perfectly calibrated for your engine, transmission, and emissions systems. By matching it to your VIN, we eliminate the need for an expensive trip to the dealership for programming, making this a straightforward fix for both seasoned mechanics and determined DIYers.
Case Study: A Tricky Diagnosis
I remember a 2012 Captiva Sport that came into my bay with a complaint of intermittent stalling at stoplights and a random P0300 (Random/Multiple Misfire Detected) code. The owner had already replaced the spark plugs and an ignition coil, but the problem persisted. My initial checks on fuel pressure and sensors were all within spec. On a hunch, I monitored the live data stream from the ECM and noticed the injector pulse width commands were becoming erratic just before a stall. After swapping in a known-good, programmed ECM, the Captiva ran perfectly. The original ECM had an internal processor fault that only showed up under specific load conditions—a classic example of how a failing computer can mimic other component failures.
Is Your Vehicle Showing These Symptoms?
A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, your engine’s computer may be the culprit:
- ✔ Persistent Check Engine Light (CEL)
- ✔ Engine stalling or running rough
- ✔ Vehicle refuses to start
- ✔ Noticeable decrease in fuel efficiency
- ✔ Transmission shifting problems or harsh shifts
- ✔ Communication error codes, such as U0100 (Lost Communication with ECM/PCM)
- ✔ Internal module fault codes like P0601, P0605, or P0606
A Straightforward Guide to Installation
Replacing the 2012 Captiva Sport ECM is a manageable job for those with basic mechanical skills. Our pre-programming service makes it a true plug-and-play process.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to discharge completely.
- Locate the ECM: On the 2012 Captiva Sport, the ECM is typically found in the engine compartment on the driver’s side (LH side), often near the fuse box or firewall.
- Disconnect Connectors: Carefully release the locking tabs on the electrical wiring harnesses and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are usually a few 10mm bolts holding it in place.
- Install the New Module: Mount your new, VIN-programmed ECM onto the bracket and secure the bolts.
- Reconnect Everything: Firmly press the wiring harnesses back into the new ECM until they click into place. Reconnect the negative battery terminal.
- Final Steps: Some vehicles may require a security or crankshaft position sensor relearn procedure, which can often be done with a capable scan tool or by following a specific key-on/key-off sequence. Start the engine and check for proper operation.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 12616889, 12630908, 12637106, 12642665, 12650256, and 12651993. It is guaranteed to fit a wide range of GM vehicles. Please confirm your vehicle is on this list:
CAMARO 12 (3.6L)
CAPTIVA SPORT 12
CTS 10-12 (3.0L, 3.6L)
EQUINOX 10-11
IMPALA 12
LACROSSE 10-11 (2.4L, 3.0L)
ORLANDO 12-13
REGAL 11
SAAB 9-5 10-11 (2.0L)
SRX 10-11 (3.0L)
TERRAIN 10-11
Note: Please match your original part number or provide your VIN to ensure perfect compatibility.
Frequently Asked Questions About This ECM
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive with the latest GM software, ready for installation.
What is a VIN and where do I find it?
The VIN is your 17-digit Vehicle Identification Number. You can find it on your vehicle’s registration, insurance card, or on a small plate on the driver’s side of the dashboard, visible through the windshield.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM (e.g., codes P0601-P0606 or U0100), then this replacement module will solve the problem. It’s crucial to ensure the ECM is the true cause and not another failing sensor or wiring issue.
Is this a new or used part?
This is a quality, inspected, and tested recycled OEM part. Each unit is verified for full functionality before being programmed with your vehicle’s specific software, ensuring reliable performance.
What if my original part number isn’t 12637106?
This module is a direct replacement for several part numbers, including 12616889, 12630908, 12642665, and others listed. As long as your vehicle is on the compatibility list, this module will function correctly once programmed to your VIN.