Restore Peak Performance to Your GM Truck or SUV
Is your 2017 GMC Yukon XL 1500 running rough, showing a persistent check engine light, or experiencing bizarre electrical issues? A failing Engine Control Module (ECM) is often the culprit behind these frustrating problems. As the brain of your vehicle’s engine, a faulty ECM can disrupt everything from fuel delivery and spark timing to transmission shifting, leaving you with an unreliable and inefficient ride. In my 20+ years of hands-on diagnostics, I’ve seen countless drivers chase expensive sensor and component replacements, only to find the core issue was the ECM all along.
This isn’t just a replacement part; it’s a direct solution. We provide a high-quality ECM, part number 12674472, that comes professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates flawlessly with your Yukon’s existing systems, incorporating the latest GM software updates for optimal performance and reliability right out of the box. Stop guessing and get the definitive fix.
From the Diagnostic Bay: The Case of the Confused Transmission
A customer brought in their 2017 Sierra 1500 with a complaint of harsh, erratic shifting and a check engine light. The codes pointed towards a transmission communication error (U0101) and a generic internal module fault (P0606). The previous shop had already replaced the transmission control module to no avail. After hooking up my scanner and monitoring live data, I noticed the ECM was intermittently dropping communication packets. The voltage readings were stable, pointing away from a wiring issue. We installed a VIN-programmed ECM, performed the security relearn, and the truck immediately ran perfectly. The transmission issue was just a symptom—the real problem was a failing 2017 Yukon XL 1500 ECM that couldn’t properly command the other modules.
Is Your Vehicle Showing These Symptoms?
- ✔ Unexplained Check Engine Light with codes like P0601, P0606, or U0100.
- ✔ Intermittent starting problems or a complete no-start condition.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough idling, engine stalling, or misfires.
- ✔ Poor acceleration or hesitant performance.
- ✔ Issues with automatic transmission shifting.
- ✔ Inaccurate or non-functioning dashboard gauges.
Your Straightforward Installation Guide
Installing your new ECM is a manageable task for a confident DIYer. However, please read all steps, especially the final security relearn requirement, before beginning.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts.
- Locate the ECM: On most compatible trucks and SUVs like the Yukon XL, the ECM is found in the engine compartment on the driver’s side (LH side), near the firewall or inner fender.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harnesses from the old module. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed ECM securely onto the bracket and reconnect the wiring harnesses. Ensure they click firmly into place.
- Reconnect Battery: Reattach the negative battery terminal.
- CRITICAL – Security Relearn: The vehicle’s anti-theft system will likely prevent it from starting until a security relearn is performed. This procedure requires a GM-compatible scan tool with access to TIS2Web or Techline Connect. This is a mandatory step for the vehicle to accept the new module. Other relearns, like for the crankshaft position sensor, may also be required.
Verified Vehicle Compatibility
This Engine Control Module is a direct-fit replacement for a wide range of GM vehicles. Please verify your part number or match your vehicle from the list below. This module is compatible with part numbers: 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815.
- Cadillac ATS: 2017 (3.6L, VIN Y)
- Cadillac CTS: 2017 (6.2L Supercharged or 3.6L Twin Turbo VIN 8)
- Cadillac Escalade / ESV: 2017
- Cadillac XTS: 2017 (3.6L, VIN 8)
- Chevrolet Corvette: 2017
- Chevrolet Silverado 1500: 2016 (ID 12674472), 2017, 2018 (ID 12686382)
- Chevrolet Suburban 1500: 2017
- Chevrolet Tahoe: 2017
- GMC Sierra 1500 / Denali 1500: 2016 (ID 12674472), 2017, 2018 (ID 12686382)
- GMC Yukon / Yukon XL 1500: 2017
Frequently Asked Questions About Your 2017 Yukon XL 1500 ECM
What is VIN programming and why is it necessary?
VIN programming loads your vehicle’s specific software and calibrations onto the ECM. This ensures it works correctly with your engine, transmission, and options package. We handle this for you before shipping.
Will my vehicle start immediately after installation?
No, in most cases it will not. A security relearn procedure must be performed using a professional scan tool (like GM’s TIS2Web/Techline Connect) to sync the new ECM with your vehicle’s anti-theft system.
Is this a difficult part for a DIYer to install?
The physical replacement is straightforward with basic tools. The main challenge is the requirement for a professional-level scan tool to perform the security relearn. If you don’t have access to one, you will need assistance from a qualified mechanic for that final step.
Does this ECM fix check engine light issues?
If the check engine light is caused by an internal failure of the original ECM (e.g., codes P0601-P0606), then this part is the correct solution. Always ensure you have performed a proper diagnosis first.
Is this part number 12674472 the only one that will work?
No, this module is a direct replacement for several part numbers, including 12692068, 12704476, 12686382, and others listed in our compatibility section. We ensure you receive a compatible, programmed unit.
What information do you need from me?
After you place your order, you must provide us with your 17-digit Vehicle Identification Number (VIN) so we can program the module specifically for your vehicle before shipping.