Restore Your Vehicle’s Brain and Reclaim Peak Performance
Is your Corvette, Sierra, or Escalade suffering from frustrating issues like intermittent stalling, a persistent check engine light, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer that governs your engine’s performance. As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can cripple an otherwise healthy vehicle. This isn’t just an inconvenience; it’s a critical failure that compromises reliability and drivability. This listing offers a direct, reliable solution: a genuine OEM ECM, part number 12674472, professionally programmed to your vehicle’s specific VIN with the latest factory software from GM.
Common Signs of a Failing GM ECM
- âś” No-start or hard-starting conditions where the engine cranks but won’t fire.
- âś” Unexplained stalling, especially when coming to a stop or at idle.
- âś” Drastic decrease in fuel economy.
- âś” Illumination of the Check Engine Light with communication-related Diagnostic Trouble Codes (DTCs) such as P0601, P0606, or U0100.
- âś” Erratic engine behavior, including misfires, rough idling, or poor acceleration.
- âś” Issues with other modules that communicate with the ECM, causing seemingly unrelated warning lights.
Case Study: A Tricky Diagnosis
A customer brought in a 2017 Sierra 1500 with a complaint that stumped two other shops: it would randomly stall at red lights, but only after driving for 30+ minutes. There were no consistent codes, just a history of U0100 (Lost Communication with ECM). After checking all the wiring and grounds, we suspected thermal failure inside the ECM itself. Heat soak was causing an internal component to fail, breaking communication. We installed a VIN-programmed module just like this one, performed the quick crankshaft variation relearn, and the truck has been running flawlessly ever since. This is a common failure mode for these units, and a pre-programmed module is the most efficient fix.
Why a VIN-Programmed Module is the Smart Choice
Ordering a new ECM from a dealership often involves towing your vehicle, waiting for the part, and paying significant labor costs for programming. Our process simplifies this entirely. You provide us with your VIN during checkout, and we handle the programming before the part ever leaves our facility. This means the 2017 Corvette Engine Control Module arrives at your door with the correct, most current GM calibrations already loaded, tailored specifically for your vehicle’s factory options. It’s the most direct path to getting your vehicle back on the road.
Your Straightforward Installation Guide
- âś” Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- âś” Locate the ECM: On a 2017 Corvette, the ECM is found on the right-hand side, under the cowl in the dash area. On trucks and SUVs like the Sierra or Tahoe, it’s typically in the left-front of the engine compartment. Consult a service manual for your specific model’s location.
- âś” Disconnect and Remove: Carefully unplug the electrical connectors. Use a small screwdriver to gently release the locking tabs if necessary. Then, unbolt the old module from its mounting bracket.
- âś” Install the New ECM: Mount the new module securely and reconnect the electrical harnesses. Ensure they click firmly into place.
- âś” Reconnect Battery: Reattach the negative battery terminal.
- âś” Perform Relearn Procedures: This is a critical final step. If the vehicle does not start, you must perform the Vehicle Theft Deterrent System (VTDS) relearn using a GM-compliant scan tool with access to TIS2Web or Techline Connect. Other procedures like a crankshaft position variation relearn may also be required. This is the responsibility of the installer.
Verified Compatibility for Your GM Car, Truck, or SUV
This ECM 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)
- 2017 Cadillac CTS (6.2L Supercharged or 3.6L Twin Turbo)
- 2017 Cadillac ATS (3.6L, VIN Y)
- 2017 Chevrolet Corvette (Located RH cowl under dash)
- 2017 Chevrolet Tahoe / Suburban 1500
- 2017 GMC Yukon / Yukon XL 1500
- 2017 GMC Sierra 1500 / Sierra Denali 1500
- 2016-2018 Chevrolet Silverado 1500 (check ID)
- 2016-2018 GMC Sierra 1500 / Sierra Denali 1500 (check ID)
Do I need to send my old ECM to you?
Do I need to send my old ECM to you?
No, a core return is not required. This is a direct purchase. We program and ship this replacement module to you after you provide your vehicle’s VIN.
What exactly is the ‘theft relearn’ procedure?
It’s a security handshake that syncs the new ECM to your vehicle’s anti-theft and ignition system. It requires a professional scan tool with access to GM’s software (TIS2Web/Techline Connect). Most professional repair shops can perform this procedure in a few minutes.
Is this a plug-and-play part?
It is ‘plug-and-program.’ The module is pre-programmed to your VIN, making the software side complete. However, the physical installation and the final security relearn procedure must be performed on the vehicle for it to function correctly.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program or ship your 2017 Corvette Engine Control Module without it.
Will this fix my check engine light?
If your check engine light is caused by an internal failure of the ECM (common codes P0601-P0606), then yes, this part will resolve the issue. It’s essential to have a proper diagnosis to confirm the ECM is the root cause of the problem.