Restore Peak Performance to Your GM Vehicle
Is your 2015-2016 Cadillac Escalade, or another compatible GM truck or SUV, suffering from baffling engine problems? If you’re dealing with a persistent check engine light, unexplained stalling, rough idling, or a sudden drop in fuel efficiency, the culprit is often a failing Engine Control Module (ECM). As the ‘brain’ of your vehicle’s engine, a faulty ECM can cause a cascade of frustrating and potentially damaging issues. I’ve seen it countless times in my 20+ years in the shop—a perfectly good engine held back by a failing computer.
This isn’t just a replacement part; it’s a direct solution. We offer a genuine OEM-quality Engine Control Module, part number 12672963, that arrives at your door programmed and ready for installation. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash the module with the latest, most stable software direct from GM. This critical step ensures seamless communication with your vehicle’s other systems, restoring the precise fuel delivery, ignition timing, and transmission shifting your vehicle had when it was new. By choosing this pre-programmed module, you bypass the expensive trip to the dealership and the need for specialized programming tools.
Is Your Vehicle Showing These Symptoms of ECM Failure?
- ✔ The check engine light is on, often with communication or internal processor codes like P0601, P0606, or U0100.
- ✔ Your engine cranks but refuses to start.
- ✔ The vehicle experiences intermittent stalling or hesitation, especially under load.
- ✔ You’ve noticed a significant and unexplained decrease in fuel economy.
- ✔ The transmission is shifting erratically or harshly.
- ✔ Other warning lights (like traction control or ABS) illuminate for no apparent reason.
From the Diagnostic Bay: The Intermittent Stall Case
A customer brought in a 2015 Yukon Denali with a problem that was driving him crazy: it would randomly stall at stoplights, but not every time. No consistent codes were stored, just a history of random communication faults. We checked the fuel pressure, battery, and alternator—all were perfect. After spending hours tracing wires, we finally connected a data logger to the ECM. We discovered that the ECM’s internal voltage would momentarily drop just before a stall. Heat soak in the engine bay was causing an internal fault in the module. We replaced it with a pre-programmed 2015-2016 Escalade Engine Control Module (the same part family), and the problem was solved instantly. It’s a classic example of how a failing ECM can mimic other issues, making proper diagnosis key.
A Straightforward Guide to Installation
Installing your new ECM is a manageable job for a confident DIYer or any professional mechanic. The key is the pre-programming, which handles the most complex part of the job for you.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system capacitors to discharge.
- Locate the ECM: On most compatible vehicles like the Escalade, Tahoe, and Silverado, the ECM is located in the front of the engine compartment on the driver’s side, often near the air filter box.
- Disconnect 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 damage.
- Remove the Old Module: Unbolt the mounting hardware holding the old ECM in place. It’s typically held by a few small bolts.
- 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 harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
- Final Steps: Depending on your vehicle, a security relearn or throttle body relearn procedure may be required. This can often be done without special tools (e.g., turning the key to ‘ON’ for 10-15 minutes). Consult your vehicle’s service information for specific steps.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of General Motors vehicles. Please verify your part number or match your vehicle from the list below. This part replaces several older part numbers, including: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12669318.
CAMARO 16 (6.2L)
CANYON 15-16 (3.6L)
COLORADO 15-16 (3.6L)
CORVETTE 14-16
CTS 14-16 (3.6L, 6.2L)
ESCALADE & ESCALADE ESV 15-16
SIERRA 1500 PICKUP 14-16
SIERRA DENALI 1500 14-16
SILVERADO 1500 PICKUP 14-16
SUBURBAN 1500 15-16
TAHOE 15-16
YUKON & YUKON XL 1500 15-16
XTS 14-16 (3.6L)
Note: Some models require matching the ID number on your original module. Please check the fitment data carefully.
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to your vehicle’s specific VIN before shipping. In some cases, a simple key-cycle security relearn may be necessary, but no special scan tools are required.
What information do you need from me?
After you place your order, you must provide us with your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive this information for programming.
Is this a used part?
This is a high-quality, inspected, and tested OEM-grade component, guaranteed to function correctly. It is programmed with the latest GM software for your vehicle.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (common codes P0601-P0606), then this part will resolve the issue. It’s crucial to ensure your vehicle’s problem has been properly diagnosed before ordering.
Where is the ECM located on my 2016 Escalade?
On the 2015-2016 Escalade, the Engine Control Module is typically found in the engine bay, on the driver’s side near the airbox and firewall.