Restore Peak Performance to Your GM Truck or SUV
Is your 2017-2018 GMC Sierra, Chevrolet Silverado, or other compatible GM vehicle suffering from perplexing issues like random stalling, poor fuel economy, a persistent check engine light, or a no-start condition? These are classic symptoms of a failing Engine Control Module (ECM). The ECM is the brain of your vehicle’s engine, managing everything from fuel injection and ignition timing to emissions controls and transmission shifting. When it falters, the entire vehicle’s performance and reliability are compromised. This replacement Engine Control Module, part number 12692068, is the definitive solution to get your truck back to running like new.
From the Diagnostic Bay
We had a 2017 Sierra Denali 1500 in the shop that was driving the owner crazy. It would run perfectly for days, then suddenly start shifting erratically and throw a half-dozen seemingly unrelated trouble codes. We checked wiring harnesses, sensors, and grounds for hours. Everything tested fine. On a hunch, we monitored the ECM’s data stream during a test drive and saw the processor voltage drop intermittently. The internal power regulation of the original ECM was failing. We installed one of these VIN-programmed modules, performed the security relearn, and the truck has been running flawlessly ever since. Sometimes, the simplest solution is the right one, but only after you’ve ruled out everything else.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light is on with multiple, often unrelated, diagnostic trouble codes (DTCs).
- ✔ Vehicle refuses to start or has difficulty starting.
- ✔ Noticeable decrease in engine performance and power.
- ✔ Poor fuel economy and rough idling.
- ✔ Intermittent stalling or hesitation during acceleration.
- ✔ Automatic transmission shifting issues or harsh shifts.
- ✔ Communication errors with diagnostic scan tools.
The Right Part, Programmed for Your Vehicle
Don’t settle for a generic, unprogrammed module that will require expensive dealer intervention. We take the guesswork and hassle out of the process. When you purchase this ECM, you provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians will then program the module with the latest, most stable GM-certified software specific to your truck’s exact build. This ensures perfect compatibility with your engine, transmission, and all factory-installed options. This is the key to a successful and lasting repair.
Your Pre-Programmed 2017-2018 Sierra Denali 1500 ECM
This module is a direct replacement for a wide range of GM trucks and SUVs, including the Cadillac Escalade, Chevy Tahoe, Suburban, and Silverado, as well as the GMC Yukon and Sierra. It is a direct replacement for multiple original part numbers, including 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. By ordering this single part, you can be confident you are receiving the correct, updated component for your vehicle.
Important Installation Information
While this module is delivered programmed to your VIN, installation is more than just a simple swap. To protect your vehicle, GM incorporates a vehicle anti-theft system (VATS) that links the ECM to other modules. Upon installation, the vehicle may not start until a ‘Vehicle Theft Deterrent Relearn’ procedure is completed. This procedure requires a compatible scan tool with access to GM’s TIS2Web or Techline Connect system. Additionally, other specific setups, such as a crankshaft position variation relearn or injector flow rate programming, may be necessary depending on your vehicle’s specific configuration. This is standard procedure for any ECM replacement on these vehicles and is the responsibility of the installer.
Frequently Asked Questions
Why do you need my VIN?
Your VIN is essential. It allows us to load the exact GM-specified software and calibrations for your vehicle’s engine, transmission, and options. This ensures the module works perfectly right out of the box, avoiding compatibility issues.
What is a ‘theft deterrent relearn’ and can I do it myself?
It’s a security procedure that syncs the new ECM with your vehicle’s ignition and security system. Without it, the vehicle will not start. This procedure typically requires professional-grade diagnostic tools like a GM MDI or a high-end scan tool with access to GM’s software. It is not something that can be done with basic hand tools.
Is this part ‘plug and play’?
It is ‘plug-in and program’. The physical installation is straightforward, but the final security and system relearn procedures are a mandatory step for the part to function correctly. The VIN programming we perform is the first critical step, and the final relearns on the vehicle are the second.
How do I know if this ECM will fix my truck’s problem?
This module will resolve issues directly caused by a faulty ECM. If your vehicle exhibits several of the symptoms listed above, and other potential causes like sensors or wiring have been ruled out by proper diagnostics, there is a very high probability this will be the correct fix.
Does this part fit models other than the Sierra Denali 1500?
Yes. This ECM is compatible with a wide range of 2016-2018 GM vehicles, including the Escalade, Tahoe, Yukon, Silverado 1500, Suburban, and several Cadillac sedans. Please review the detailed fitment list on this page to confirm compatibility with your specific model and year.