Restore Peak Performance to Your GMC Yukon XL
Is your 2015 or 2016 GMC Yukon XL 1500 running rough, throwing a check engine light, or refusing to start? A failing Engine Control Module (ECM) is often the culprit behind these frustrating and complex issues. As the brain of your vehicle’s engine, the ECM governs everything from fuel mixture and ignition timing to transmission shifting and emissions control. When it falters, your truck’s reliability and performance suffer. This isn’t just an inconvenience; it can lead to poor fuel economy, failed emissions tests, and even leave you stranded.
This is a direct-fit replacement 2015-2016 Yukon XL Engine Control Module, designed to solve those problems without the exorbitant cost and hassle of a dealership visit. The biggest hurdle with ECM replacement is the need for specialized programming. We eliminate that step for you. Simply provide your vehicle’s VIN during checkout, and our experts will flash this module with the latest, most stable GM-certified software specific to your Yukon. This ensures seamless integration and optimal performance right out of the box.
A Technician’s Notebook: The Intermittent Stall Mystery
I had a 2015 Sierra in the shop once (which uses this same ECM family as the Yukon XL) that was a diagnostic nightmare. The customer complained of random stalling at stoplights, but with no consistent check engine codes. We checked fuel pressure, sensors, and wiring harnesses—everything seemed fine. On a hunch, after monitoring live data, I noticed the processor voltage inside the ECM would dip erratically just before a stall. It was an internal failure that wasn’t consistently setting a DTC like the common P0601. Replacing the module with a VIN-programmed unit like this one solved the problem instantly. These intermittent faults are where a quality, tested ECM proves its worth.
Is Your Yukon Showing These ECM Failure Signs?
A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, your engine’s computer may be to blame. In my 20+ years of experience, these are the most common symptoms I’ve seen tied to a failing GM ECM:
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Diagnostic Trouble Codes (DTCs) related to internal module failure, such as P0601, P0606, or P060A.
- ✔ Communication error codes like U0100 (Lost Communication with ECM/PCM).
- ✔ Unexplained drop in fuel efficiency.
- ✔ Engine misfires, stumbling, or rough idling.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Vehicle enters a no-start or “crank, no-start” condition.
- ✔ Failure to pass state emissions inspections.
Your Straightforward ECM Installation Guide
Replacing the ECM on your Yukon XL is a manageable job for a DIYer with basic tools. This module is located in the left-hand (driver’s side) front of the engine compartment. Following these steps will ensure a smooth installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for the system capacitors to discharge.
- Locate the ECM: Open the hood and find the ECM mounted on the driver’s side of the engine bay, near the firewall or inner fender.
- Disconnect Electrical Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the module. Never force them. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the mounting hardware holding the original ECM in place and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed ECM in the same location and secure it with the original hardware.
- Reconnect Everything: Firmly plug the wiring harness connectors back into the new module until they click into place. Reconnect the negative battery terminal.
- Perform Security Relearn: In many cases, you may need to perform a security relearn procedure (often called a Passlock or Passkey relearn) to sync the new ECM with your vehicle’s anti-theft system. This procedure can typically be done without special tools and instructions are widely available online or in service manuals.
Verified Fitment For Your GM Vehicle
While this listing is for a 2015-2016 Yukon XL Engine Control Module, this hardware is also compatible with a wide range of other GM cars, trucks, and SUVs when programmed correctly. Please verify your part number or vehicle in the list below. This module is a direct replacement for part numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, 12669318.
ATS 15 (3.6L)
ATS 16 (3.6L, VIN Y)
CAMARO 16 (6.2L)
CANYON 15-16 (3.6L)
COLORADO 15-16 (3.6L)
CORVETTE 14-16
CTS 14-15 (Sdn, 3.6L)
CTS 16 (3.6L, VIN 8 or 6.2L)
ESCALADE 15-16
ESCALADE ESV 15-16
SIERRA 1500 PICKUP 14-15
SIERRA 1500 PICKUP 16 (ID 12662034, 12672537, 12673195)
SIERRA DENALI 1500 14-16
SILVERADO 1500 PICKUP 14-15
SILVERADO 1500 PICKUP 16 (ID 12662034, 12672537, 12673195)
SUBURBAN 1500 15-16
TAHOE 15-16
XTS 14-16 (3.6L, VIN 8)
YUKON 15-16
YUKON XL 1500 15-16
Because this module comes pre-programmed to your VIN, the main software is ready to go. However, you will likely need to perform a simple, tool-free security relearn procedure to sync the new ECM with your vehicle’s anti-theft system. You may also need to perform a crankshaft position sensor variation relearn, which may require a capable scan tool.
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. Please double-check the VIN for accuracy to ensure correct programming.
Absolutely. A used module from a junkyard will be programmed for the donor vehicle and will not work in yours without being wiped and reprogrammed by a dealer. Furthermore, you have no idea about its history or condition. Our modules are verified, tested, and flashed with the latest clean software for your specific vehicle.
This ECM will fix issues directly caused by a faulty module. While it resolves the most common symptoms like internal processor faults (P0601), it’s crucial to ensure your vehicle has been properly diagnosed. A failing sensor or wiring issue can sometimes mimic ECM failure. We recommend a thorough diagnosis before ordering.
Manufacturers like GM often release software updates for their vehicles to fix bugs, improve transmission shifting logic, or enhance engine efficiency. When we program your module, we use the most current software version available from GM, ensuring your vehicle benefits from all official improvements made since it left the factory.