Is Your GM Vehicle Plagued by Frustrating Engine Problems?
As a technician with over two decades of experience under the hood, I’ve seen it all. A car that won’t start, an engine that sputters and stalls randomly, a transmission that shifts erratically, or a check engine light that just won’t go away. Often, the root cause isn’t a simple sensor or a bad wire—it’s the brain of the operation, the Engine Control Module (ECM). When the ECM fails, it can send you down a rabbit hole of expensive and incorrect repairs. This genuine, used GM Engine Control Module, service number 12669908, is the reliable, cost-effective solution to get your vehicle running right again.
The Smart Solution: Pre-Programmed to Your Exact Vehicle
Forget the hassle and high cost of a dealership visit. We take the complexity out of the repair. When you purchase this ECM, you simply provide us with your vehicle’s 17-digit VIN. My team then professionally programs the module with the latest, most stable software calibrations directly from General Motors. This isn’t a generic, one-size-fits-all solution; it’s a component prepared specifically for your car’s unique configuration, ensuring seamless communication with all other onboard systems.
Expert Pro Tip: Check Your Connections First
Before you’re certain the ECM is faulty, do a quick visual inspection. I’ve had countless vehicles towed to my shop with classic ECM failure symptoms, only to find the problem was a loose or corroded main ground wire or a corroded pin in the ECM connector. Take 10 minutes to disconnect the battery, unplug the ECM connectors, and look for any green or white crusty buildup. Cleaning the terminals with a small wire brush can sometimes save you hundreds of dollars. If they’re clean and the problem persists, the ECM is the next logical step.
Why Choose Our Pre-Programmed GM ECM 12669908?
This isn’t just a replacement part; it’s a comprehensive solution designed to solve your problem efficiently. When your original ECM fails, whether from electrical shorts, heat damage, or internal component failure, this unit is the answer.
- ✔ VIN-Specific Programming: We flash the module with the latest GM software for your exact VIN, ensuring perfect compatibility.
- ✔ Solves Common Issues: A direct fix for no-start conditions, rough idle, poor fuel economy, and various diagnostic trouble codes (DTCs).
- ✔ Cost-Effective Repair: Get a reliable, tested OEM part without the high price tag of a new unit from the dealer.
- ✔ Ready for Installation: This module ships to you ready to be installed, saving you time and diagnostic headaches.
Simple Installation Process
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for capacitors to discharge.
- Locate the ECM: On most compatible models, the ECM is found in the engine compartment, often on the driver’s side (LH) or near the battery.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Then, unbolt the old module from its mounting bracket.
- Install the New ECM: Mount the new module securely and plug in the electrical connectors until they click firmly into place.
- Reconnect Battery: Reconnect the negative battery terminal.
Important Post-Installation Steps (Your Responsibility)
Modern vehicles have sophisticated security and operating systems. While we handle the core programming, a few final ‘handshake’ procedures must be performed once the ECM is installed in your vehicle. This is standard for any ECM replacement.
A professional technician with the proper tools is typically required for these steps.
- Vehicle Theft Deterrent System (VTDS) Relearn: If your vehicle does not start after installation, the security system must be relearned to the new ECM. This procedure requires a GM-compatible scan tool or access to the GM TIS2Web programming system.
- Crankshaft Position Variation Relearn (CASE Relearn): This may be necessary to prevent a P0315 trouble code and ensure the engine runs smoothly.
- Other Relearns: Depending on your vehicle’s specific options, other procedures like injector flow rate programming or idle learn may be required.
Guaranteed Fitment for Service Number 12669908
Please verify that your original module has the service number 12669908 printed on the label. This part is a direct replacement for the following vehicles and options:
- ACADIA: 2017 (VIN Z, 11th digit), 2.5L | 2018, 2.5L
- ATS: 2017, 2.0L
- CRUZE: 2017-2018, gasoline models
- CTS: 2017, 2.0L
- EQUINOX: 2018, 1.5L | 2018, 2.0L | 2019, 1.5L (ID 12669908)
- LACROSSE: 2018, 2.5L
- MALIBU: 2017 | 2018, 1.8L | 2018, 2.0L
- REGAL: 2018, 2.0L
- VOLT: 2017-2018, gasoline (ID 12669908)