Restore Peak Performance to Your GM Truck or SUV
Is your truck or SUV suffering from frustrating issues like a no-start condition, erratic stalling, a persistent check engine light, or poor fuel economy? These are classic signs of a failing Engine Control Module (ECM), the central computer that manages your vehicle’s performance. Don’t let a faulty computer keep you off the road. This professionally programmed ECM is the definitive solution to get your vehicle running reliably again, with its brain restored to factory-perfect condition.
Common Symptoms of a Failing ECM & Your Solution
A failing engine computer can cause a wide range of confusing problems, often leading to incorrect diagnoses. If you’re experiencing any of the following, a faulty ECM is the likely culprit:
- Check Engine Light (CEL) Illumination: Often with communication-related Diagnostic Trouble Codes (DTCs) like U0100 or internal processor codes like P0606.
- Engine Stalling or Misfiring: The engine may cut out unexpectedly while driving or run rough at idle.
- No-Start Condition: The engine cranks but refuses to start, despite having fuel and spark.
- Reduced Power and Poor Fuel Economy: The vehicle feels sluggish and you’re making more trips to the gas station.
- Transmission Shifting Problems: The ECM communicates with the transmission controller, and a failure can lead to harsh or incorrect shifting.
This replacement module is the direct solution. We take the guesswork out of the repair by pre-programming this unit with the latest GM calibrations specifically for your vehicle’s Vehicle Identification Number (VIN). This ensures all systems communicate correctly, restoring the performance and efficiency you depend on. This specific 2016-2018 Sierra 1500 ECM 12674472 is your key to a successful and lasting repair.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: We flash the module with your specific VIN and the newest GM software, ensuring it’s ready for your vehicle’s unique configuration.
- โ Restores Original Performance: Eliminates issues caused by a faulty computer, bringing back the smooth operation and power you expect.
- โ Cost-Effective Dealership Alternative: Get a correctly programmed part without the high costs and scheduling delays of a dealership visit.
- โ Broad GM Compatibility: This single unit replaces multiple part numbers, including 12692068, 12704476, 12686382, and more, for a wide range of GM trucks and SUVs.
- โ This unit is backed by our one-year replacement warranty.
A Technician’s Tip for a Smooth Installation
As a veteran tech, I’ve seen many DIYers install a new ECM and panic when the truck won’t start. It’s almost always a simple security handshake issue. Modern GM vehicles have a sophisticated Vehicle Theft Deterrent (VTD) system. When you install a new ‘brain’ like this 2016-2018 Sierra 1500 ECM 12674472, the VTD system doesn’t recognize it and prevents the engine from starting to protect against theft. Performing the ‘theft relearn’ procedure with a proper GM scan tool tells the vehicle’s other modules that this new ECM is authorized. It’s a crucial final step, not a defect. Doing this, and any other required relearns like for the crankshaft position sensor, ensures a complete and successful repair.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, simply reply to your order confirmation email with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your ECM without it.
What is a ‘theft relearn’ and why is it necessary?
The theft relearn is a security procedure that syncs the new ECM to your vehicle’s anti-theft system. If this step is not performed after installation, the system may prevent the engine from starting. This procedure requires a compatible professional scan tool with GM software (like Tis2web/Techline Connect) and is the responsibility of the installer.
Is this part guaranteed to fix my problem?
This ECM is guaranteed to be a functioning, correctly programmed module. It will fix any issues directly caused by a faulty ECM. However, it’s crucial that your vehicle has been properly diagnosed. This part will not solve problems related to other bad sensors, wiring issues, or mechanical failures.
Is this a simple plug-and-play installation?
While the physical installation is straightforward, post-installation electronic procedures are required. As noted, a theft relearn is often necessary. Depending on the vehicle, other procedures like a crankshaft variation relearn or injector flow rate programming may also be needed to ensure optimal performance. These are standard procedures for this type of repair.
Which vehicles does this ECM fit?
This module, the 2016-2018 Sierra 1500 ECM 12674472, fits a wide range of 2016-2018 GM models including the Silverado 1500, Sierra 1500, Tahoe, Suburban, Yukon, Escalade, and certain Cadillac models. Please refer to the detailed fitment list on this page to confirm compatibility with your specific vehicle.