End Engine Frustration and Restore Peak Performance
Is your Corvette, Silverado, Escalade, or XTS suffering from baffling electrical issues, a persistent check engine light, or poor engine performance? A failing Engine Control Module (ECM) is often the culprit, acting like a broken brain for your vehicle. This leads to frustrating problems like rough idling, stalling, decreased fuel economy, and even a no-start condition. Don’t let a faulty computer keep you off the road. This direct-fit, professionally programmed Programmed 12704475 ECM is the definitive solution to get your vehicle running like new again.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing ECM is the likely cause:
- Unexplained Check Engine Light (CEL) with communication-related codes (e.g., U-codes) or internal processor fault codes (e.g., P0601, P0606).
- Noticeable drop in fuel efficiency.
- Engine misfires, stumbling, or hesitation during acceleration.
- Intermittent stalling or difficulty starting the engine.
- Erratic transmission shifting or other strange electronic behavior.
Installing this VIN-programmed module resolves these issues at their source, restoring the precise communication and control your engine needs to operate at its best. We take the guesswork out of the repair by flashing the unit with the latest official GM software updates for your specific vehicle before it ever leaves our facility. This ensures you receive a part that is not only a perfect physical fit but a perfect electronic match as well. When it comes to your vehicle’s most critical component, trust the experts to deliver a reliable, ready-to-install Programmed 12704475 ECM.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: Arrives pre-flashed to your specific VIN, eliminating the need for expensive and time-consuming dealership programming.
- ✔ Loaded with Latest GM Software: We ensure your module has the most current factory calibrations, often fixing issues that older software versions could not address.
- ✔ Broad GM Compatibility: A direct replacement for part numbers 12704475, 12692069, 12680656, 12686383, and 12688528, covering a wide range of popular 2018-2019 GM cars, trucks, and SUVs.
- ✔ Restores Factory Operation: Fixes complex drivability problems, smooths out engine performance, and restores fuel economy by re-establishing correct engine parameters.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: The ‘Why’ Behind VIN Programming
Many people assume an ECM is just a simple swap. However, modern vehicles use the ECM to communicate with dozens of other modules, from the transmission to the anti-lock brakes. Simply installing a blank or used ECM will cause a communication breakdown, and your vehicle won’t start. By programming the unit to your VIN before we ship, we’re essentially introducing it to your vehicle’s unique electronic identity. This process loads all the correct parameters for your engine, transmission, and emissions equipment, making the final installation process as smooth as possible and saving you from a costly trip to the dealer for programming.
Take control of your repair and restore the confidence you have in your vehicle. With this professionally prepared Programmed 12704475 ECM, you’re not just buying a part; you’re buying a solution that brings back the power, reliability, and precision you expect from your GM vehicle.
Frequently Asked Questions
What information do you need from me after I order?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is crucial for us to program the ECM with the correct software and calibrations for your specific vehicle build.
What is a ‘theft relearn’ and will I need to do one?
A theft relearn, or security relearn, is a procedure that syncs the new ECM with your vehicle’s anti-theft and ignition key system. In many cases, this procedure will be required for the vehicle to start after installation. It typically requires a GM-specific diagnostic tool like Tis2web/Techline Connect and is the responsibility of the installer.
Is this part truly ‘plug and play’?
While the module is pre-programmed to your VIN to avoid dealer flashing, some on-vehicle setup procedures may still be necessary after installation. This can include the security relearn, a crankshaft position variation relearn, or other specific setups depending on your vehicle. These are standard procedures for this type of repair.
Do I need to send in my old ECM?
No, there is no core charge or need to send us your old, faulty module. This is a direct purchase of a replacement unit.
How do I know if this will fix my car’s problem?
This ECM is a guaranteed fix for a faulty module. However, it is essential that your vehicle has been properly diagnosed. If your issues are caused by a bad sensor, wiring problem, or another component, replacing the ECM will not solve the problem. We always recommend a thorough diagnosis by a qualified technician.
Which part numbers does this ECM replace?
This module is a direct replacement for the following GM part numbers: 12704475, 12692069, 12680656, 12686383, and 12688528.