Restore Peak Performance to Your GM Vehicle
Is your 2017 Cadillac Escalade ESV, Tahoe, or Sierra running poorly, refusing to start, or displaying a persistent check engine light? These are classic signs of a failing Engine Control Module (ECM), the central computer of your vehicle. A malfunctioning ECM can wreak havoc on your engine’s performance, fuel economy, and overall reliability. This genuine replacement Engine Control Module, part number 12704476, is the definitive solution to get your truck or SUV back in top operating condition.
This isn’t just a part in a box. We provide a comprehensive service by programming this module specifically for your vehicle using your unique Vehicle Identification Number (VIN). Before we ship, our technicians flash the unit with the latest, most stable software updates directly from GM. This ensures that when you receive the part, it is calibrated to the exact specifications of your vehicle’s engine, transmission, and emissions systems, providing a seamless and effective repair.
Expert Pro Tip
Expert Pro Tip
Before condemning your ECM, always check the basics first. Ensure your battery has a full charge (at least 12.6 volts) and that all battery cable connections at the battery, engine block, and chassis are clean and tight. A weak battery or poor ground connection can mimic ECM failure symptoms and cause communication errors that lead to a misdiagnosis. Verifying these simple points can save you time and money.
Common Symptoms of a Failing ECM
If you’re experiencing any of the following issues, a faulty ECM could be the culprit. Replacing it with our pre-programmed 2017 Escalade ESV Engine Control Module can resolve these complex problems:
- ✔ Check Engine Light is illuminated with various communication or sensor codes.
- ✔ Vehicle will not start or has intermittent starting problems.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Engine stalling, sputtering, or misfiring unexpectedly.
- ✔ Poor acceleration or a general loss of power.
- ✔ Transmission shifting issues or harsh engagement.
- ✔ Inconsistent or erratic idle speed.
The Importance of VIN Programming
Modern vehicles like your 2017 Escalade ESV have complex, interconnected electronic systems. The ECM must communicate perfectly with the transmission controller, body control module, anti-lock brake system, and more. Simply installing a used or non-programmed module will result in a no-start condition and numerous error codes. Our VIN-specific programming service loads your vehicle’s precise software configuration onto the module, making the installation process as straightforward as possible. This critical step ensures all onboard systems recognize and communicate with the new ECM correctly.
Installation and Post-Installation Procedures
Once you receive your programmed 2017 Escalade ESV Engine Control Module, the physical installation is typically straightforward. However, a crucial final step is required: the Vehicle Theft Deterrent System (VTDS) relearn. Because the ECM is a core part of the vehicle’s security, it must be synchronized with your specific keys and security system. This procedure requires a GM-compatible diagnostic tool with access to Tis2web or Techline Connect. This is a standard procedure for any professional automotive technician. Additionally, other system initializations, such as a crankshaft position variation relearn or injector flow rate programming, may be necessary depending on your vehicle’s specific configuration. It is the responsibility of the installer to complete these final setup procedures.
Guaranteed Fitment for Your Vehicle
This module is a direct replacement for multiple part numbers, including 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. It is compatible with a wide range of GM trucks, SUVs, and performance sedans. Please verify your vehicle is on the list below:
- 2017 Cadillac Escalade / Escalade ESV
- 2017 Cadillac XTS (3.6L Twin Turbo LF3)
- 2017 Cadillac CTS (6.2L Supercharged / 3.6L Twin Turbo LF3)
- 2017 Cadillac ATS (3.6L Twin Turbo LF4)
- 2017 Chevrolet Corvette
- 2017 Chevrolet Tahoe / Suburban 1500
- 2016-2018 Chevrolet Silverado 1500 Pickup (check specific IDs)
- 2017 GMC Yukon / Yukon XL 1500
- 2016-2018 GMC Sierra 1500 / Sierra Denali 1500 (check specific IDs)
Frequently Asked Questions
Expert Pro Tip
Before condemning your ECM, always check the basics first. Ensure your battery has a full charge (at least 12.6 volts) and that all battery cable connections at the battery, engine block, and chassis are clean and tight. A weak battery or poor ground connection can mimic ECM failure symptoms and cause communication errors that lead to a misdiagnosis. Verifying these simple points can save you time and money.