Is Your 2017 Yukon Running Rough, Stalling, or Not Starting at All?
As a mechanic with over two decades of experience under the hood, I’ve seen firsthand how a failing Engine Control Module (ECM) can bring a perfectly good GM truck or SUV to a dead stop. If your 2017 GMC Yukon is throwing random check engine lights, experiencing erratic shifting, or suffering from a frustrating no-start condition, the problem often points directly to the vehicle’s computer. This isn’t just a part; it’s the brain of your engine, and when it falters, everything else does too.
This Engine Control Module, part number 12674052, is the definitive solution. We take the guesswork and high dealership costs out of the equation. Before this module ever leaves our facility, we program it with the latest official GM software, tailored specifically to your vehicle’s Vehicle Identification Number (VIN). This ensures seamless integration and optimal performance right out of the box.
A Real-World Diagnosis: The Case of the Confusing Crank-No-Start
From the Shop Floor
“A customer’s 2017 Yukon was towed in last week with these exact symptoms: it would crank strong but never fire up. He’d already spent a small fortune replacing the fuel pump and spark plugs with no success. A quick diagnostic scan with my professional tool revealed a U0100 code—Lost Communication with ECM. After confirming the module had proper power and ground, it was clear the internal circuitry of the original ECM had failed. This pre-programmed module is the exact fix that got him back on the road without the dealership hassle.”
Why Our Programmed 2017 Yukon ECM is the Smart Choice
Getting your truck fixed shouldn’t be complicated. We’ve streamlined the process to be as straightforward as possible, providing a reliable part that addresses the core problem.
- ✔ VIN-Specific Programming: We flash this module with your truck’s exact VIN, loading the correct GM-certified calibrations for your engine and transmission.
- ✔ Solves Common Failures: Effectively corrects issues like no-start conditions, false sensor codes, poor fuel economy, and communication errors.
- ✔ Direct-Fit Replacement: Engineered to be a direct replacement for a wide range of original part numbers, ensuring a perfect fit and connection.
- ✔ Latest Software Updates: Your module arrives with the most current software from GM, often resolving issues that the original factory software didn’t.
Simple Installation Process
While professional installation is always recommended, here is a general guide to replacing the ECM on many compatible GM trucks and SUVs.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the ECM: On most 2017 Yukon, Tahoe, and Sierra models, the ECM is located in the engine compartment on the driver’s side, near the firewall or inner fender.
- Disconnect Connectors: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Never force them.
- Remove the 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 and secure it with the original hardware. Reconnect the electrical connectors, ensuring they click securely into place.
- Reconnect Battery: Reattach the negative battery terminal.
Important Post-Installation Steps: Your Responsibility
Please Read Carefully: This ECM is programmed to your VIN, but for security reasons, a final step is often required. If your vehicle cranks but does not start after installation, a Vehicle Theft Deterrent System (VTDS) Relearn must be performed. This procedure syncs the new ECM to your vehicle’s security system. This requires a compatible scan tool or access to GM’s Tis2web/Techline Connect service. Additionally, other procedures like a Crankshaft Variation (CASE) relearn or injector flow rate programming may be necessary depending on your specific vehicle and its condition. This is the responsibility of the installer.
This Module is a Direct Replacement for the Following Part Numbers:
12692068, 12704476, 12686382, 12674052, 12674472, 12678815
Guaranteed Vehicle Fitment:
This part is confirmed to fit the following vehicles with the specified options:
- 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
- 2017-2018 Chevrolet Silverado 1500 Pickup
- 2016 Chevrolet Silverado 1500 Pickup (ID 12674472)
- 2017 GMC Yukon & Yukon XL 1500
- 2017-2018 GMC Sierra 1500 & Sierra Denali 1500
- 2016 GMC Sierra 1500 Pickup (ID 12674472)