Restore Your Yukon’s Performance and Reliability
Is your 2015-2016 GMC Yukon XL 1500 experiencing frustrating issues like stalling, poor fuel mileage, or a persistent check engine light? These are classic signs of a failing Engine Control Module (ECM), the computer that manages your vehicle’s engine performance. A faulty ECM can disrupt everything from fuel injection to transmission shifting, making your trusted SUV unreliable. This isn’t just an inconvenience; it’s a problem that needs a solid, dependable solution.
This replacement Engine Control Module is the definitive fix for your vehicle’s electronic woes. We take the guesswork and hassle out of the repair by pre-programming the module to your Yukon’s specific Vehicle Identification Number (VIN) before it ships. This means it arrives loaded with the latest GM factory software, ready for a straightforward installation. You get a reliable part that restores original performance without the high cost and scheduling headaches of a dealership visit. Simply provide your VIN at checkout, and we’ll handle the rest.
Common Signs of a Failing ECM
If you’re noticing any of the following, a faulty ECM is a likely culprit. In my 20+ years of diagnostic work, these are the symptoms I see time and again when the engine’s brain starts to fail:
- ✔ Check Engine Light is on or flashing
- ✔ Engine cranks but won’t start
- ✔ Intermittent stalling or rough idling
- ✔ Noticeable decrease in fuel economy
- ✔ Hesitation or stumbling during acceleration
- ✔ Transmission shifting problems
- ✔ Communication error codes, such as U0100
- ✔ Internal module failure codes, like P0601 or P0606
From the Diagnostic Bay
I recently had a 2015 Yukon XL in the shop with a phantom no-start condition. The owner had already replaced the battery and starter to no avail. It would run fine for days, then refuse to start for an hour. After hooking up my scan tool, I found no communication with the ECM. We tested the power and ground circuits to the module, and they were perfect. The culprit was an internal failure in the original ECM. Instead of towing it to the dealer, we ordered one of these VIN-programmed modules. It arrived two days later, we installed it in under 30 minutes, performed the security relearn, and the truck fired right up. The customer saved hundreds on a tow bill and dealer programming fees and was back on the road with a reliable vehicle.
A Straightforward Guide to Installation
Replacing the ECM on your Yukon XL is a manageable job for a DIYer with basic tools. Our pre-programming service eliminates the most complex step. Here’s a general guide:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On the 2015-2016 Yukon XL, the ECM is typically found in the front left (driver’s side) of the engine compartment.
- Disconnect the Wiring: Carefully unplug the electrical connectors from the old module. There are usually release tabs that need to be pressed or lifted. Avoid forcing them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you may need it for the new module.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it.
- Reconnect Everything: Plug the wiring harnesses firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Perform Security Relearn: In many cases, you will need to perform a simple security relearn procedure (often called a ‘key-on/key-off’ cycle) to sync the new ECM with your vehicle’s anti-theft system. This procedure can typically be found in your owner’s manual or online and requires no special tools.
Verified Vehicle Compatibility
This module is a direct replacement for part number 12669318 and is compatible with a wide range of GM vehicles. Please verify your part number or contact us with your VIN to ensure perfect fitment. This part fits the following models:
Frequently Asked Questions
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module with the latest GM software using the VIN you provide. It arrives ready for installation and a simple security relearn procedure, which requires no special tools.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we have this information to program it correctly.
Is this a brand new part?
This is a high-quality, tested, and guaranteed functional OEM component. It is programmed with new, vehicle-specific software to ensure it performs to factory standards.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM (e.g., codes P0601, P0606, or other internal processor errors), this part will resolve the issue. It’s crucial to properly diagnose the problem before ordering parts.
What is the security relearn procedure?
It’s a simple process that syncs the new ECM to your vehicle’s anti-theft system. A common method involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this cycle three times. Specific instructions for your vehicle are readily available online.
What if I have a different part number?
This module is compatible with several part numbers, including 12692067, 12676230, 12656993, and more. Please check the full list in our description or contact us to confirm compatibility.