Restore Peak Performance to Your GM Truck
There’s nothing more frustrating than a truck that won’t run right. Whether you’re dealing with a persistent check engine light, stalling, rough idling, or a complete no-start situation, a failing Engine Control Module (ECM) is often the culprit. As the brain of your vehicle’s engine, the ECM controls everything from fuel mixture and ignition timing to transmission shifting. When it falters, your truck’s reliability and performance suffer. This direct-fit ECM is the definitive solution for your 2016-2018 Silverado 1500 and other compatible GM vehicles, arriving pre-programmed with the latest GM software specifically for your truck’s Vehicle Identification Number (VIN).
Is Your Silverado Showing These Signs of ECM Failure?
- ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error), P0606 (ECM/PCM Processor Fault), or U0100 (Lost Communication With ECM/PCM).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ The vehicle stalls intermittently, especially when warm.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Noticeable loss of power and poor acceleration.
From the Diagnostic Bay: The Case of the Intermittent Stall
A customer brought in his 2017 Sierra 1500 with a problem that was driving him crazy. The truck would run perfectly for days, then suddenly stall at a stoplight and refuse to restart for 10-15 minutes. No consistent codes were stored, just a history of random communication faults. After ruling out fuel and ignition system issues, we focused on the ECM. I’ve seen this exact scenario over a dozen times; heat soak affects an internal processor on the module’s circuit board, causing it to fail intermittently. Swapping in a properly programmed ECM, like this one, solved the problem permanently. It’s a classic failure pattern for this generation of GM trucks.
The Solution: A Reliable, VIN-Programmed 2016-2018 Silverado 1500 ECM
Don’t waste time and money chasing phantom electrical issues or paying steep dealership prices. We take the guesswork out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program this module with the correct, factory-updated calibration for your specific truck. This ensures all engine and transmission parameters are set correctly, restoring the performance and efficiency you expect from your vehicle.
Your Straightforward ECM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Disconnect Connectors: Carefully release the locking tabs on the electrical harness connectors and pull them straight out from the module. Avoid pulling on the wires themselves.
- ✔ Remove the Old Module: Unbolt the mounting hardware holding the old ECM in place and remove it from the vehicle.
- ✔ Install the New ECM: Mount your new, pre-programmed ECM in the same location and secure it with the original hardware.
- ✔ Reconnect Everything: Plug the electrical connectors firmly back into the new module until they click into place. Reconnect the negative battery terminal.
- ✔ Perform Relearn Procedures: As noted, a Vehicle Theft Deterrent System (VTDS) relearn is required. This must be done using a professional GM diagnostic tool (like TIS2Web or Techline Connect). Other procedures like a crankshaft position variation relearn may also be necessary for optimal performance. This is the responsibility of the installer.
Verified Fitment For These GM Models
This module is a direct replacement for part numbers 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. It is guaranteed to fit the following vehicles:
- 2017 Cadillac Escalade & Escalade ESV
- 2017 Cadillac XTS (3.6L Twin Turbo, VIN 8, opt LF3)
- 2017 Cadillac CTS (6.2L Supercharged or 3.6L Twin Turbo)
- 2017 Cadillac ATS (3.6L, VIN Y, opt LF4)
- 2017 Chevrolet Corvette
- 2017 Chevrolet Tahoe & Suburban 1500
- 2016-2018 Chevrolet Silverado 1500 Pickup
- 2017 GMC Yukon & Yukon XL 1500
- 2016-2018 GMC Sierra 1500 Pickup & Sierra Denali 1500
Frequently Asked Questions
What is VIN programming and why is it important?
VIN programming loads your vehicle’s specific software and calibrations onto the ECM. This is critical for ensuring the engine, transmission, emissions systems, and vehicle options work together correctly, just as they did from the factory.
What is a ‘theft relearn’ and can I do it myself?
The theft relearn procedure syncs the new ECM with your vehicle’s security system and ignition keys. Without it, the truck will not start. This procedure requires professional-grade GM diagnostic software like TIS2Web or Techline Connect and is typically performed by a qualified mechanic or dealership.
Do I need to do any other ‘relearn’ procedures?
Yes, potentially. Depending on your vehicle, procedures like the crankshaft position variation relearn (CASE relearn) or injector flow rate programming may be necessary to ensure smooth operation and prevent fault codes. The installer is responsible for completing any required setups.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot program and ship your module without it. Please double-check it for accuracy to avoid delays.
Will this fix my truck’s problem for sure?
This ECM is a reliable solution for the symptoms listed. However, proper vehicle diagnosis is key. We recommend confirming the ECM is the point of failure before ordering. This part addresses the most common failure points we see in our 20+ years of experience.