Restore Peak Performance to Your GM Vehicle
If you’re dealing with frustrating issues like a persistent check engine light, erratic engine performance, or even a no-start condition in your 2017 Cadillac Escalade, the root cause is often a failing Engine Control Module (ECM). As the central computer for your engine, a faulty ECM can create a cascade of problems that are difficult to diagnose. This isn’t just an inconvenience; it affects your vehicle’s reliability, fuel economy, and safety. In my 20+ years of diagnostics, I’ve seen how a compromised ECM can mimic a dozen other failures, leading to wasted time and money on unnecessary parts.
This is your direct-fit, reliable solution. We provide a high-quality 2017 Escalade Engine Module that arrives at your door pre-programmed with the latest official GM software. Simply provide your Vehicle Identification Number (VIN) at checkout, and our technicians will flash the module specifically for your vehicle’s configuration. This critical step ensures all systems communicate correctly, saving you a costly trip to the dealership for programming.
Case Study: A Tricky Diagnosis
A few months back, a 2017 GMC Sierra 1500 was towed into my bay. The owner had replaced the battery and alternator, but the truck would still intermittently refuse to start, and when it did run, the transmission shifted harshly. No codes were stored for the transmission, but we had a P0606 (ECM/PCM Processor Fault) and a U0100 (Lost Communication With ECM/PCM). After verifying all power and ground circuits to the module were solid, it was clear the ECM itself was failing internally. We installed a VIN-programmed module just like this one, performed the security relearn, and the truck ran perfectly. The owner had spent nearly $800 on other parts before finding the real problem—this module would have saved him that headache from the start.
Is Your GM Vehicle Showing These Signs?
A failing ECM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need. Look out for:
- ✔ Check Engine Light is on with diagnostic trouble codes (DTCs) like P0601, P0602, P0606, or other communication errors (U-codes).
- ✔ The engine cranks but will not start.
- ✔ Unexplained drops in fuel efficiency.
- ✔ Rough or inconsistent engine idle.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Automatic transmission shifting issues.
- ✔ The vehicle’s anti-theft or security light is illuminated.
A Straightforward Guide to Installation
While the final security pairing requires a specific procedure, the physical installation of this 2017 Escalade Engine Module is something many DIYers can handle. Always consult a repair manual for your specific vehicle’s procedures and torque specs.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- Locate the ECM: On most compatible trucks and SUVs like the Escalade, Tahoe, and Silverado, the ECM is located in the engine compartment on the driver’s side, often near the firewall or inner fender.
- Disconnect and Remove: Carefully unplug the electrical connectors. These usually have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New Module: Mount the new ECM securely in place and reconnect all electrical connectors, ensuring they click and lock firmly.
- Reconnect Power: Reattach the negative battery terminal.
- CRITICAL FINAL STEP – Security Relearn: The vehicle will NOT start until a Vehicle Theft Deterrent (VTD) relearn is performed. This procedure pairs the new ECM to your vehicle’s security system. This must be done using a professional GM programming tool like TIS2Web or Techline Connect. This is the responsibility of the installer. Other procedures like a crankshaft variation relearn may also be necessary.
Verified Compatibility for Your Vehicle
This module is a guaranteed fit for the following vehicles, replacing part numbers 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. Please verify your vehicle and options below:
- 2017 Cadillac Escalade / Escalade ESV (Engine Compartment)
- 2017 Cadillac XTS (3.6L, VIN 8, opt LF3)
- 2017 Cadillac CTS (6.2L Supercharged or 3.6L Twin Turbo, VIN 8, opt LF3)
- 2017 Cadillac ATS (3.6L, VIN Y, opt LF4)
- 2017 Chevrolet Corvette (RH Cowl Under Dash)
- 2017 Chevrolet Tahoe / Suburban 1500 (LH Front Engine Compartment)
- 2016-2018 Chevrolet Silverado 1500 Pickup (LH Front Engine Compartment)
- 2017 GMC Yukon / Yukon XL 1500 (LH Front Engine Compartment)
- 2016-2018 GMC Sierra 1500 Pickup (LH Front Engine Compartment)
- 2017-2018 GMC Sierra Denali 1500 (LH Front Engine Compartment)
Frequently Asked Questions
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means we load the latest, vehicle-specific software from General Motors onto the module using your VIN before we ship it. This ensures the computer has the correct calibration for your engine, transmission, and options, saving you a trip to the dealer.
Is this plug-and-play? What else is needed after installation?
The physical installation is plug-in, but the job is not complete until you perform a mandatory Vehicle Theft Deterrent (VTD) relearn. The engine will not start without this step. Other relearns, like for the crankshaft position sensor, may also be required depending on your vehicle.
How do I perform the theft relearn procedure?
The official and most reliable method is using a GM-specific diagnostic tool with a subscription to TIS2Web or Techline Connect. This is standard procedure for any professional shop or advanced DIYer with the right equipment.
Will this fix my specific problem?
This module will resolve issues directly caused by a faulty ECM, such as internal processor faults (P0606) or communication failures. However, you must ensure the ECM is the true cause of your problem. Always perform a thorough diagnosis first.
What part numbers does this module replace?
This ECM is a direct replacement for several part numbers, including 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815.