Restore Your GM’s Core Performance and Reliability
Is your 2017 GMC Yukon, Tahoe, or Sierra plagued by frustrating issues like a persistent check engine light, sudden stalling, no-start conditions, or erratic engine behavior? Before you start replacing sensors and pumps, the root cause is often the vehicle’s central computer: the Engine Control Module (ECM). As a technician with over two decades of experience, I’ve seen countless hours and dollars wasted on misdiagnosis when the ECM was the culprit all along. This module is the brain of your engine, and when it fails, it can create a cascade of confusing symptoms.
We offer a straightforward and reliable solution. This is a direct-fit Engine Control Module, part number 12692068, which we professionally program to your vehicle’s specific Vehicle Identification Number (VIN) before it ever leaves our facility. This means it arrives loaded with the latest factory software from GM, tailored precisely for your truck or SUV. This critical step ensures proper communication with other vehicle systems and helps restore the performance and fuel efficiency you expect.
Case Study: A Tricky Diagnosis
A customer brought in a 2017 Silverado 1500 with an intermittent no-start condition that two other shops couldn’t solve. They had already replaced the battery, starter, and fuel pump. The truck would crank but not fire, and it threw a dozen random communication codes (U-codes). After checking the basics, I focused on the ECM. By monitoring live data, I noticed the ECM wasn’t commanding the fuel injectors to open during cranking, despite receiving all the correct signals. We installed one of our VIN-programmed ECMs, performed the quick security relearn, and the truck fired up instantly and ran perfectly. It’s a classic example of how a faulty ECM can mimic other component failures.
Is Your GM Vehicle Showing These Symptoms?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, this module is a likely solution:
- ✔ Check Engine Light (CEL) is illuminated with codes like P0601, P0606 (Internal Control Module Processor Error).
- ✔ Vehicle will not start or is very difficult to start.
- ✔ Engine stalls unexpectedly while driving or at idle.
- ✔ Noticeable decrease in fuel economy.
- ✔ Poor engine performance, hesitation, or misfires.
- ✔ Communication error codes (U0100 – Lost Communication With ECM/PCM).
- ✔ Automatic transmission shifting issues or harsh shifts.
A Straightforward Guide to Installation
Replacing the ECM is a manageable job for a DIYer or professional. The key is taking your time and following the proper post-installation procedure.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the ECM: On most compatible trucks and SUVs (like the Yukon, Tahoe, Sierra), the ECM is located in the engine compartment on the driver’s side, near the firewall or inner fender.
- Disconnect and Remove: Carefully unplug the large electrical connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place. Firmly reconnect the electrical connectors, ensuring they click and lock securely.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Security Relearn: This is the most critical step. If the vehicle does not start, you must perform the vehicle anti-theft system relearn. This procedure pairs the new ECM to your vehicle’s security system.
Important Notice on Post-Installation Procedures
While we handle the complex VIN programming, the final vehicle-side relearn procedures are the responsibility of the installer. The most common requirement is the Vehicle Theft Deterrent Relearn, which must be performed using a GM-compatible scan tool with access to Tis2web or Techline Connect. In some cases, other procedures like a Crankshaft Position Variation Relearn or injector flow rate programming may also be necessary to ensure optimal performance. This is standard procedure for any ECM replacement.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. It fits a wide range of GM vehicles. Please verify your model and options below:
- 2017 Cadillac Escalade & Escalade ESV
- 2017 Cadillac XTS (3.6L Twin Turbo, VIN 8)
- 2017 Cadillac CTS (6.2L Supercharged or 3.6L Twin Turbo)
- 2017 Cadillac ATS (3.6L, VIN Y)
- 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
What do I need to do after I purchase?
After you place your order, you must provide us with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship the module without it. We will contact you after your purchase to collect this information.
Is this module truly plug-and-play?
It is pre-programmed to your VIN, which eliminates the need for dealer programming. However, you will likely need to perform a security relearn procedure with a capable scan tool if the vehicle doesn’t start. This is a security feature of the vehicle, not a defect in the part.
What is a security relearn and can I do it myself?
The security relearn syncs the new ECM with your vehicle’s anti-theft system. You can only perform this procedure if you have access to professional diagnostic tools like GM’s Tis2web/Techline Connect. Most professional repair shops can perform this service for you.
Will this fix my specific problem?
This ECM will resolve issues directly caused by a faulty original module, such as internal processor faults (P0601) or communication failures. It’s essential to have your vehicle properly diagnosed to confirm the ECM is the point of failure before ordering.
My original part number is 12674472. Will this work?
Yes. This module, 12692068, is a fully compatible replacement for all the part numbers listed in the description, including 12674472. We will program it to function correctly for your specific vehicle.