Restore Peak Performance to Your GM Truck or SUV
Is your 2015-2016 GMC Yukon XL 1500 acting up? Maybe you’re dealing with a persistent check engine light, rough idling, stalling, or a frustrating no-start condition. These are classic signs that the brain of your engine, the Engine Control Module (ECM), might be failing. As a technician with over two decades of experience under the hood, I’ve seen how a faulty ECM can cause a cascade of confusing problems. This isn’t just a part; it’s the central command center for your vehicle’s performance and efficiency. Don’t let a bad module keep you off the road or drain your wallet with endless diagnostic fees.
We offer a straightforward and reliable solution: a high-quality replacement 2015-2016 Yukon XL 1500 ECM, part number 12672537. The best part? We take care of the most critical step for you. Before we ship it, we will program the module with the latest GM-approved software, specifically matched to your vehicle using its unique Vehicle Identification Number (VIN). This means you receive a part that is truly ready for installation, eliminating the need for expensive dealership programming or specialized scan tools.
Case Study: A Tricky Diagnosis
I remember a 2015 Sierra 1500 that came into my shop with a bizarre, intermittent stalling issue. The owner had already replaced the fuel pump and a few sensors with no luck. No hard fault codes were stored, just a history of random communication errors (U-codes). Instead of just throwing more parts at it, I hooked up my oscilloscope to the 5-volt reference circuits at the ECM. Sure enough, I saw the voltage intermittently drop out, causing sensors to go offline and the engine to die. This pointed directly to an internal failure in the ECM. We installed a VIN-programmed module just like this one, and the truck has been running flawlessly ever since. It’s a perfect example of how the right diagnosis and the right part save time and money.
Common Signs of a Failing GM ECM
- ✔ Check Engine Light is on with codes related to internal processor failure (e.g., P0601, P0606).
- ✔ Loss of communication with the ECM (DTC U0100).
- ✔ Engine misfires, runs rough, or has poor acceleration.
- ✔ Unexplained stalling or difficulty starting the vehicle.
- ✔ Decreased fuel economy.
- ✔ Problems with the transmission shifting correctly, as the ECM communicates with the TCM.
A Straightforward Guide to Installation
Replacing the 2015-2016 Yukon XL 1500 ECM is a job most DIY enthusiasts can handle with basic tools. Following the correct procedure is key to a successful repair.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow all system capacitors to discharge.
- Locate the ECM: On most GM trucks and SUVs like the Yukon, Sierra, and Silverado, the ECM is located in the engine compartment on the driver’s side, near the firewall or air filter housing.
- Disconnect the Connectors: Carefully release the locking tabs on the electrical wiring harnesses and pull them straight out from the module. Never force them. Inspect the connectors for any corrosion or bent pins.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. It’s typically held in place by a few small bolts.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it.
- Reconnect Everything: Firmly plug the wiring harnesses back into the new module until they click and lock into place. Reconnect the negative battery terminal.
- Final Steps: In some cases, a security relearn or crank position sensor relearn procedure may be necessary. This can often be done without a scan tool (consult your vehicle’s service information). Start the vehicle and check for proper operation.
Verified Vehicle Compatibility
This module is a direct replacement for original part number 12672537 and is also compatible with several other part numbers. It fits a wide range of GM vehicles. Please verify your vehicle is on this list. Note: Some models require matching the ID number on your original module.
Fits Models Including:
- ATS (2014-2016)
- CAMARO (2016)
- CANYON (2015-2016)
- COLORADO (2015-2016)
- CORVETTE (2014-2016)
- CTS (2014-2016)
- ESCALADE / ESV (2015-2016)
- SIERRA 1500 / DENALI 1500 (2014-2016)
- SILVERADO 1500 (2014-2016)
- SUBURBAN 1500 (2015-2016)
- TAHOE (2015-2016)
- XTS (2014-2016)
- YUKON / YUKON XL 1500 (2015-2016)
Do I need to do any programming myself?
Do I need to do any programming myself?
No. We handle the programming for you before shipment. Simply provide us with your vehicle’s VIN during or after checkout, and we will flash the module with the latest GM software specific to your vehicle. It arrives ready to be installed.
What is a VIN and where do I find it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your vehicle. You can find it on your driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
What if my original part number isn’t 12672537?
This module is compatible with a wide range of part numbers, which are listed in the ‘Verified Vehicle Compatibility’ section. As long as your original part number is on our list, this module will work as a direct replacement.
Is any other relearn procedure required after installation?
In many cases, the vehicle will start and run perfectly after installation. However, some GM vehicles may require a Crankshaft Position Sensor Relearn (Case Relearn) or a security relearn to clear certain codes and ensure optimal performance. These procedures can often be performed without a high-end scan tool.