Is Your 2015-2016 Yukon Experiencing Unexplained Issues?
If you’re dealing with a frustrating mix of engine problems on your GMC Yukon, you know how quickly it can ruin your day. One minute it’s running fine, the next you’re on the side of the road. As a technician with over two decades of experience under the hood, I’ve seen this exact scenario play out countless times. The Engine Control Module (ECM), the vehicle’s main computer, is often the culprit behind these baffling symptoms.
A Real-World Story from the Shop
A customer’s 2015 Yukon came in last week with these exact symptoms. It would randomly stall at traffic lights, the check engine light was on, and the transmission was shifting harshly. They had already replaced the battery and a couple of sensors with no luck. After connecting my scan tool, I found a series of communication loss codes (U-codes) and erratic data from the engine sensors. This pointed directly to a failing ECM. The internal processors were struggling to keep up, causing a cascade of problems across the vehicle. This isn’t an uncommon failure; the constant heat cycles and vibrations in the engine bay take their toll over the years.
Common Symptoms of a Failing GM ECM
A faulty ECM doesn’t always fail completely. It often starts with intermittent issues that can be hard to pin down. If you’re noticing any of the following, your ECM is a likely suspect:
- โ Check Engine Light is on with various, sometimes unrelated, trouble codes.
- โ The engine cranks but refuses to start.
- โ Poor fuel economy and a noticeable loss of power.
- โ Stalling, stumbling, or rough idling for no apparent reason.
- โ Harsh or erratic automatic transmission shifting.
- โ Communication errors with your scan tool or other vehicle modules.
The Direct-Fit, Programmed Solution
This isn’t a generic, one-size-fits-all part. This is a genuine GM Engine Control Module, part number 12676230, that we program specifically for your vehicle before it ever leaves our facility. This is the critical step that separates a successful repair from a frustrating one. Dealerships charge a significant amount for this programming service, which requires specialized equipment and software subscriptions. We handle all of that for you.
How Our Programming Service Works:
- Place Your Order: Purchase this ECM for your Yukon or other compatible GM vehicle.
- Provide Your VIN: After your purchase, simply send us your 17-digit Vehicle Identification Number (VIN).
- We Do the Work: Our technicians will use your VIN to access the latest, most stable software calibration directly from GM and flash it onto the module.
- Install and Go: We ship the module to you, ready for installation. In most cases, this is a plug-and-play process, getting you back on the road without a trip to the dealer.
Guaranteed Compatibility & Fitment
This ECM is a direct replacement for a wide range of GM trucks, SUVs, and cars. It is crucial to match your part number or vehicle application. This module is located in the left-hand front of the engine compartment on most trucks and SUVs like the Yukon, Tahoe, and Silverado, but can be found in other locations like the RH firewall on the Colorado/Canyon. Please verify your vehicle from the list below.
This module replaces the following part numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, 12669318.
This part will fit these makes and models with these options:
- โ ATS 14-16 (3.6L)
- โ CAMARO 16 (6.2L)
- โ CANYON 15-16 (3.6L)
- โ COLORADO 15-16 (3.6L)
- โ CORVETTE 14-16
- โ CTS 14-16 (3.6L, 6.2L)
- โ ESCALADE & ESCALADE ESV 15-16
- โ SIERRA 1500 & SIERRA DENALI 1500 14-16
- โ SILVERADO 1500 PICKUP 14-16
- โ SUBURBAN 1500 15-16
- โ TAHOE 15-16
- โ XTS 14-16 (3.6L)
- โ YUKON & YUKON XL 1500 15-16