Restore Your Vehicle’s Core Performance and Reliability
Is your Cadillac Escalade, Chevy Silverado, or GMC Sierra suffering from frustrating issues like intermittent stalling, a persistent check engine light, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer that manages everything from fuel injection and ignition timing to transmission shifting. Driving with a faulty ECM isn’t just annoying—it can lead to poor fuel economy, failed emissions tests, and potentially leave you stranded. This isn’t a problem that will fix itself. This is the direct, reliable solution to get your vehicle running right again.
We offer a professionally prepared ECM, part number 12674472, that arrives at your door programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load the latest, most stable software updates directly from GM, ensuring optimal performance and compatibility. This critical service saves you a trip to the dealership and the high costs associated with their programming services. You’re not just buying a part; you’re buying a comprehensive solution that restores the heart of your vehicle’s electronic system.
From the Diagnostic Bay: The Ghost in the Machine
I remember a 2017 Silverado 1500 that came into my shop with a maddeningly intermittent problem. The owner said it would randomly lose power and sometimes stall at a stoplight, but with no consistent check engine codes. We checked fuel pressure, sensors, and wiring harnesses—everything seemed fine. After hours of diagnostics, we finally captured a freeze-frame data glitch during an event, pointing to an internal processor fault in the ECM (a P0606 code that only appeared for a second). The original ECM was simply failing under load. We installed a VIN-programmed module just like this one, performed the crankshaft variation and theft relearns, and the truck ran flawlessly. It’s a textbook example of how a failing 2017 Escalade ESV ECM or its equivalent in a truck can mimic a dozen other problems, making a quality, pre-programmed part the most efficient fix.
Is Your GM Vehicle Showing These Red Flags?
A failing ECM can cause a wide range of symptoms. If you’re experiencing any of the following, it’s highly likely the engine computer is the culprit:
- ✔ Check Engine Light is on with codes like P0601, P0606, or U0100
- ✔ Engine cranks but refuses to start
- ✔ Intermittent stalling or rough idling
- ✔ Noticeable decrease in fuel efficiency
- ✔ Poor engine performance and hesitation during acceleration
- ✔ Communication issues with diagnostic scan tools
- ✔ Automatic transmission shifting erratically or harshly
Your Straightforward Installation Roadmap
Replacing the ECM is a manageable job for a confident DIYer or any professional technician. The key is understanding the electronic ‘re-learning’ process required after the physical swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electronic work.
- Locate the ECM: On most compatible trucks and SUVs (like the Tahoe, Yukon, Sierra, Silverado), the ECM is located in the engine compartment on the driver’s side, often near the firewall or inner fender. On other models like the Corvette, it may be in the cowl area.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that must be released. Then, unbolt the module from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed ECM and securely reconnect the wiring harnesses. Ensure they click into place. Reconnect the vehicle’s battery.
- CRITICAL – Perform Relearn Procedures: This is the most important step. The vehicle will likely not start until a Vehicle Theft Deterrent System (VTDS) relearn is completed. This procedure electronically pairs the new ECM to your vehicle’s security system. Additional procedures like a Crankshaft Variation Relearn may also be necessary. These relearns require a professional scan tool with GM-specific software (e.g., TIS2Web, Techline Connect). This is the responsibility of the installer.
Verified to Fit Your Vehicle
This module is a direct-fit replacement for a wide range of popular GM vehicles. Please verify your part number or contact us with your VIN to confirm compatibility. This part, 12674472, is interchangeable with part numbers 12692068, 12704476, 12686382, 12674052, and 12678815.
- Cadillac: 2017 Escalade, 2017 Escalade ESV, 2017 ATS (3.6L), 2017 CTS (6.2L Supercharged & 3.6L Twin Turbo), 2017 XTS (3.6L)
- Chevrolet: 2017 Corvette, 2016-2018 Silverado 1500, 2017 Tahoe, 2017 Suburban 1500
- GMC: 2016-2018 Sierra 1500, 2017-2018 Sierra Denali 1500, 2017 Yukon, 2017 Yukon XL 1500
Choosing this pre-programmed 2017 Escalade ESV ECM is the smartest way to solve complex engine management problems, providing a reliable foundation for your vehicle’s performance for years to come.
Frequently Asked Questions
Why do you need my VIN?
Your VIN is essential. We use it to load the exact, correct software and calibrations for your vehicle’s specific engine, transmission, and options. This ensures your new ECM works perfectly right out of the box, preventing compatibility issues.
What is a ‘theft relearn’ and can I do it myself?
The theft relearn is a security procedure that syncs the new ECM to your vehicle’s ignition keys and anti-theft system. Without it, the vehicle will not start. This procedure requires a professional-grade diagnostic tool with access to GM’s software (like Techline Connect). It is typically performed by a repair shop and is the buyer’s responsibility to have completed.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the old ECM (common codes P0601, P0606), then yes, this part is the correct fix. However, you should always have the codes professionally diagnosed to ensure the problem isn’t a separate sensor or wiring issue.
Is this a simple plug-and-play part?
It is ‘plug-and-program-play’. The physical installation is straightforward, but the electronic relearn procedures mentioned (theft, crankshaft variation, etc.) are a mandatory final step for the part to function correctly.
What makes this better than a used part from a salvage yard?
A used ECM from a salvage yard will be programmed to the donor vehicle and will not work in yours. It also carries the risk of having the same internal faults as your old one. Our module is tested, confirmed functional, and programmed with the latest GM software for your specific VIN, providing a much more reliable and effective solution.