Restore Peak Performance to Your GM Vehicle
If you’re dealing with baffling electrical issues, a persistent Check Engine Light, or a vehicle that refuses to start, the root cause is often the very brain of your engine: the Engine Control Module (ECM). As a technician with over two decades of diagnostic experience, I’ve seen firsthand how a failing ECM can mimic a dozen other problems, leading to wasted time and money on unnecessary parts. This isn’t just a component; it’s the central command center for your engine’s performance, fuel economy, and reliability.
This listing is for a genuine replacement Engine Control Module, compatible with part number 12692068 and other interchangeable numbers. The most significant benefit we offer is our professional pre-programming service. Before this module ever leaves our facility, we flash it with the latest, most stable software updates from General Motors, using the specific VIN you provide. This ensures that when you receive it, it’s already calibrated for your exact vehicle, eliminating software bugs from older versions and saving you a costly programming session at the dealership. This is the correct way to ensure your 2017 Escalade ESV ECM replacement is done right.
Case Study: A Tricky Diagnosis
I remember a 2017 Sierra 1500 that came into the shop with an intermittent no-start and random stalling while driving—a true nightmare for the owner. The codes were all over the place, pointing to different sensors. After hours of testing wiring and replacing a couple of sensors with no success, we focused on the ECM. On the surface, it seemed fine, but under load and heat, it was failing internally. We installed a VIN-programmed ECM just like this one, performed the quick security relearn, and the truck ran perfectly. It’s a classic example of how a faulty 2017 Escalade ESV ECM or its equivalent can be the hidden culprit behind a host of frustrating issues.
Common Signs of a Failing ECM
- ✔ Vehicle will not start or has trouble starting.
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Diagnostic Trouble Codes (DTCs) related to internal processor failure, such as P0601, P0606, or P062B.
- ✔ Communication loss with other modules (U-codes).
- ✔ Poor engine performance, hesitation, or misfires.
- ✔ Drastic decrease in fuel economy.
- ✔ Issues with automatic transmission shifting.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning work on any electronic components.
- ✔ Locate the ECM: On most compatible trucks and SUVs like the Escalade, Tahoe, and Sierra, the ECM is found in the engine compartment, typically on the driver’s side (LH). On the Corvette, it’s located in the passenger-side (RH) cowl area.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be released. Once disconnected, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Bolt the new, pre-programmed ECM into place. Reconnect the electrical harnesses, ensuring they click securely into place.
- ✔ Reconnect Battery: Reattach the negative battery terminal.
- ✔ Perform Security Relearn: This is the most critical final step. If the vehicle does not start, you or your mechanic must perform the Vehicle Theft Deterrent (VTD) relearn using a GM-compatible scan tool with access to TIS2Web or Techline Connect. Other procedures like a crankshaft variation relearn may also be necessary. This is the responsibility of the installer.
Verified Fitment For These GM Vehicles
This module is a direct replacement for the original ECM in the following vehicles, matching part numbers 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. Please verify your part number or contact us for confirmation.
- 2017 Cadillac Escalade & Escalade ESV
- 2017 Cadillac XTS (3.6L Twin Turbo, VIN 8)
- 2017 Cadillac CTS (6.2L Supercharged & 3.6L Twin Turbo)
- 2017 Cadillac ATS (3.6L Twin Turbo, VIN Y)
- 2017 Chevrolet Corvette
- 2017 Chevrolet Tahoe & Suburban 1500
- 2017 Chevrolet Silverado 1500 Pickup
- 2016 Chevrolet Silverado 1500 Pickup (ID 12674472)
- 2018 Chevrolet Silverado 1500 Pickup (ID 12686382)
- 2017 GMC Yukon & Yukon XL 1500
- 2017 GMC Sierra 1500 & Sierra Denali 1500
- 2016 GMC Sierra 1500 Pickup (ID 12674472)
- 2018 GMC Sierra 1500 & Sierra Denali 1500 (ID 12686382)
Frequently Asked Questions About Your New ECM
Frequently Asked Questions
What do I need to do after I purchase?
After placing your order, you must provide us with your vehicle’s 17-digit VIN. We cannot program and ship the module without it. Please reply to your order confirmation email with the VIN.
Why is a ‘theft relearn’ necessary?
The theft relearn procedure syncs the new ECM with your vehicle’s existing anti-theft and ignition key systems. It’s a security handshake that confirms the new module is authorized to start the engine. Without it, the system will prevent the engine from starting.
Can I perform the theft relearn myself?
This procedure requires a professional-grade scan tool with access to GM’s official software (TIS2Web/Techline Connect). While some advanced DIYers may have this, most customers will need to have a qualified mechanic perform this final step.
Is this part truly plug-and-play?
It is ‘plug-in and program-ready’. We handle the difficult VIN-specific programming. The final step, the security relearn, is a simple procedure for any professional shop and is required for the installation to be complete.
What if my original part number is slightly different?
This module replaces several part numbers. Please check the list provided. If your number is not on the list, contact us with your VIN and original part number to ensure we find the correct solution for you.