Restore Your Truck’s Performance and Reliability
Is your 2017 GMC Yukon or other GM vehicle suffering from frustrating, hard-to-diagnose electrical problems? A faulty Engine Control Module (ECM), the computer brain of your vehicle, is often the culprit behind issues like a sudden no-start condition, poor fuel economy, or a persistent check engine light. This isn’t just an inconvenience; it’s a critical failure that can leave you stranded. I’ve seen it countless times in the shop: a vehicle comes in on a tow truck, all the basics check out, but communication with the ECM is lost. That’s where this direct-replacement module comes in.
We take the guesswork and hassle out of the repair by providing a professionally programmed 2017 Yukon Engine Control Module. Before we ship it, we flash the unit with the latest official GM calibrations specific to your vehicle’s VIN. This ensures that when you receive the part, it’s ready for installation and the final security relearn process, getting you back on the road faster than sourcing a blank unit from a dealer.
Case Study: A Tricky Diagnosis
A customer brought in a 2017 Sierra 1500 with an intermittent no-crank, no-start issue. The dash would light up, but turning the key did nothing. No codes were stored initially, making it a diagnostic nightmare. After hours of tracing wires and checking relays, we finally caught the ECM failing to communicate on the CAN bus network. Instead of a costly and time-consuming dealer visit, we installed one of our VIN-programmed modules. After performing the security relearn with our scan tool, the truck fired right up and has been reliable ever since. This pre-programmed solution saved the customer both time and money.
Common Signs of a Failing ECM
If you’re experiencing any of the following, a failing engine computer could be the root cause. A faulty module can trigger a wide range of diagnostic trouble codes (DTCs), most notably internal processor failure codes.
- âś” Check Engine Light is on with codes like P0601, P0606, or other P06xx processor faults.
- âś” Vehicle will not start or has a no-crank condition.
- âś” Complete loss of communication with the scan tool.
- âś” Erratic engine performance, such as stalling, misfiring, or poor acceleration.
- âś” Decreased fuel efficiency for no apparent reason.
- âś” Issues with automatic transmission shifting.
A Straightforward Guide to Installation
Replacing your 2017 Yukon Engine Control Module is a manageable job for a DIYer with basic tools or a quick task for any professional mechanic. The most critical part is the final security relearn procedure.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On most trucks and SUVs like the Yukon and Tahoe, 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. They have locking tabs that need to be released. Once unplugged, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place. Reconnect the electrical harnesses, ensuring they click securely into position.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Security Relearn: This is a mandatory final step. If the vehicle does not start, you or your mechanic must perform the Vehicle Theft Deterrent (VTD) system relearn using a compatible scan tool with access to GM’s TIS2Web or Techline Connect software. Other procedures like a crankshaft variation relearn may also be necessary.
Will This Fit My Vehicle?
This module is a direct replacement for several part numbers and fits a wide range of General Motors vehicles. Please verify your vehicle is on this list. This ECM is compatible with part numbers 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815.
- Cadillac ATS (2017): 3.6L (VIN Y, LF4)
- Cadillac CTS (2017): 3.6L (VIN 8, LF3 Twin Turbo) & 6.2L (Supercharged)
- Cadillac Escalade / ESV (2017)
- Cadillac XTS (2017): 3.6L (VIN 8, LF3)
- Chevrolet Corvette (2017)
- Chevrolet Silverado 1500 (2016-2018)
- Chevrolet Suburban (2017)
- Chevrolet Tahoe (2017)
- GMC Sierra 1500 (2016-2018)
- GMC Sierra Denali 1500 (2017-2018)
- GMC Yukon (2017)
- GMC Yukon XL (2017)
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, please send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it.
What is a “theft relearn” and is it required?
The Vehicle Theft Deterrent (VTD) relearn syncs the new ECM to your vehicle’s anti-theft system. It is a mandatory step if the vehicle doesn’t start after installation. This procedure requires a professional scan tool with access to GM’s software (TIS2Web/Techline Connect) and is the responsibility of the buyer.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of your old ECM (e.g., code P0601), this replacement module will solve the problem. However, if the light is on for another reason (like a bad sensor), you will still need to diagnose and repair that separate issue.
My original part number isn’t 12674052, but it’s on your list. Will this work?
Yes. This ECM is a fully compatible, direct replacement for all part numbers listed in the description, including 12692068, 12704476, 12686382, 12674472, and 12678815. We will program it to function correctly for your specific vehicle.
Are any other relearn procedures needed?
Depending on your vehicle, you or your mechanic may need to perform additional setup procedures after the theft relearn, such as a Crankshaft Position System Variation Learn or injector flow rate programming. This is standard for ECM replacement on modern GM vehicles.