Restore Peak Performance to Your GM Truck or SUV
Is your 2017 Yukon XL 1500, Sierra, or Tahoe suffering from a persistent check engine light, erratic behavior, or a frustrating no-start condition? A failing Engine Control Module (ECM) is often the culprit behind these complex issues. As the brain of your vehicle’s engine, a faulty ECM can disrupt everything from fuel delivery and ignition timing to transmission shifting. This isn’t just an inconvenience; it’s a critical failure that compromises your vehicle’s reliability and performance. We offer a dependable, straightforward solution: a genuine GM Engine Control Module, part number 12674052, professionally programmed with the latest software updates specifically for your vehicle’s VIN.
Symptoms of a Failing ECM You Can’t Ignore
Over my 20+ years in diagnostics, I’ve seen how a bad ECM can mimic a dozen other problems, leading to wasted time and money on unnecessary parts. If your vehicle is experiencing any of the following, the ECM should be your primary suspect:
- ✔ Persistent Check Engine Light (CEL) with various communication or performance codes.
- ✔ Engine cranks but refuses to start.
- ✔ Noticeable drop in fuel economy.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Harsh or incorrect automatic transmission shifting.
- ✔ Communication errors with your scan tool.
From the Shop Floor: A Real-World Diagnostic Story
“A customer’s 2017 Sierra 1500 came in last month with a no-start condition after sitting overnight. They had already replaced the battery and alternator, thinking it was a power issue. Our initial scan showed no communication with the ECM. Instead of just ordering a new computer, we checked the basics first: power and ground circuits to the module. The ECM had solid power and ground, but the 5-volt reference circuit, which powers many key engine sensors, was dead. This confirmed an internal failure within the ECM itself. After installing one of our pre-programmed modules and performing the security relearn, the truck fired right up. This is a classic case where properly diagnosing the ECM saved the customer from replacing perfectly good sensors.”
Why Choose Our Pre-Programmed 2017 Yukon XL 1500 ECM?
Forget the hassle and high cost of a dealership visit. We handle the critical programming for you before the part ever leaves our facility. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash the module with the correct, factory-authorized GM calibration for your specific vehicle. This ensures seamless integration and optimal performance right out of the box.
Simple Installation and Required Procedures
While this part is designed for a direct fit, modern vehicle electronics require specific post-installation steps. Please read this carefully:
- Safety First: Always disconnect the negative battery terminal and wait 10 minutes before starting any electrical work.
- Locate and Replace: The ECM is typically found in the engine compartment on the left-hand (driver’s) side. Carefully disconnect the wiring harnesses and unbolt the old module. Install the new module and securely reconnect the harnesses.
- Reconnect Battery: Reattach the negative battery terminal.
- CRITICAL – Vehicle Theft Deterrent System Relearn: Upon installation, your vehicle’s anti-theft system will likely prevent it from starting. This is normal. A security relearn procedure MUST be performed using a professional GM diagnostic tool like Tis2web or Techline Connect. This synchronizes the new ECM with your vehicle’s security components.
- Additional Relearns: Depending on your vehicle’s configuration, other procedures like a Crankshaft Position Variation Relearn or injector flow rate programming may also be necessary. These are standard procedures after an ECM replacement.
NOTICE: The buyer or their certified mechanic is responsible for performing all necessary security and system relearn procedures. We guarantee the ECM is correctly programmed to your VIN; the final vehicle-specific synchronization is the responsibility of the installer.
Guaranteed Fitment for Your Vehicle
This module is a direct replacement for the following part numbers: 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815. It is compatible with a wide range of GM models, including:
- 2017 Cadillac Escalade & Escalade ESV
- 2017 Cadillac XTS (3.6L Twin Turbo)
- 2017 Cadillac CTS (6.2L Supercharged & 3.6L Twin Turbo)
- 2017 Cadillac ATS (3.6L)
- 2017 Chevrolet Corvette
- 2017 Chevrolet Tahoe & Suburban 1500
- 2016-2018 Chevrolet Silverado 1500
- 2017 GMC Yukon & Yukon XL 1500
- 2016-2018 GMC Sierra 1500 & Sierra Denali 1500