Restore Peak Performance to Your GM Truck or SUV
Is your 2015-2016 GMC Yukon XL 1500 acting up? If you’re dealing with a persistent Check Engine Light, rough idling, stalling, or other baffling engine issues, the problem often traces back to a failing Engine Control Module (ECM). As the central computer for your vehicle’s engine, a faulty ECM can disrupt everything from fuel delivery to transmission shifting, making your vehicle unreliable and frustrating to drive. I’ve seen it hundreds of times in my shop: a good vehicle brought to its knees by a failing computer.
This isn’t just a replacement part; it’s a complete solution. We take the guesswork and hassle out of the repair by pre-programming this 2015-2016 Yukon XL ECM with the latest GM software updates, tailored specifically to your vehicle’s VIN. This means you get a module that’s ready for installation right out of the box, saving you from a costly and time-consuming trip to the dealership for programming. Restore your vehicle’s brainpower and get it running the way it was meant to.
From the Diagnostic Bay: The Intermittent No-Start Nightmare
A customer brought in a 2015 Sierra 1500 with a problem that had stumped two other shops: it would randomly refuse to start, but only after it had been driven for a while and sat for about an hour. There were no consistent trouble codes, just a general U0100 ‘Lost Communication with ECM’ code that would appear and disappear. We checked all the usual suspects—battery, grounds, ignition switch. Everything checked out. On a hunch, I focused on the ECM. With the engine warm, I lightly tapped on the module’s case with a screwdriver handle. The engine immediately stalled. That confirmed it: an internal failure in the ECM, likely a cracked solder joint, was causing the intermittent connection loss when heat caused components to expand. We replaced it with a VIN-programmed module like this one, and the customer never had the issue again. Sometimes, the fix is simpler than the symptom suggests.
Is Your GM Vehicle Exhibiting These Symptoms?
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine’s computer needs attention:
- âś” Persistent Check Engine Light with codes like P0601 (Internal Control Module Memory Check Sum Error), P0606 (ECM/PCM Processor Fault), or U0100 (Lost Communication with ECM).
- âś” Engine stalling, misfiring, or running rough.
- âś” Complete no-start or intermittent starting condition.
- âś” Noticeable decrease in fuel economy.
- âś” Erratic or harsh automatic transmission shifting.
- âś” Other warning lights on the dash, as the ECM communicates with dozens of other modules.
A Straightforward Guide to Installation
Installing your pre-programmed ECM is a manageable job for a confident DIYer. While specific steps can vary slightly by model, here is a general guide for a Yukon, Tahoe, or Silverado.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent any accidental reconnection.
- Locate the ECM: On most compatible trucks and SUVs, the ECM is located in the engine bay, on the driver’s side, near the firewall or air filter housing.
- Disconnect the Wiring: Carefully release the locking tabs on the electrical connectors 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 ECM from its mounting bracket. It’s typically held in by a few 10mm bolts.
- Install the New ECM: Mount your new, pre-programmed ECM onto the bracket and securely fasten the bolts.
- Reconnect Everything: Plug the wiring harnesses back into the new module until they click firmly into place. Reconnect your vehicle’s negative battery terminal.
- Perform Security Relearn: In many cases, you will need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. This allows the new ECM to sync with your vehicle’s anti-theft system.
Verified Vehicle Compatibility
This module is a direct replacement for part number 12673195 and is interchangeable with several other part numbers. Please verify your vehicle is on this list. This unit is compatible with these part numbers: 12692067 12676230 12656993 12662034 12672537 12673195 12663391 12672963 12669318
ATS 16 Electronic Control Module; (LH engine compartment), 3.6L, VIN Y (8th digit, opt LF4)
CANYON 15-16 Electronic Control Module; (RH firewall), 3.6L
ATS 15 Electronic Control Module; (LH engine compartment), 3.6L
CTS 16 Electronic Control Module; 6.2L
CORVETTE 14-16 Electronic Control Module; (RH cowl under dash)
SIERRA DENALI 1500 14-15 Electronic Control Module; (LH front engine compartment)
SIERRA 1500 PICKUP 14 Electronic Control Module; (LH front engine compartment)
XTS 14-16 Electronic Control Module; (3.6L), VIN 8 (8th digit, opt LF3)
CTS 16 Electronic Control Module; 3.6L, VIN 8 (8th digit, opt LF3)
ESCALADE 15-16 Electronic Control Module; (LH front engine compartment)
CAMARO 16 Electronic Control Module; 6.2L
YUKON XL 1500 15-16 Electronic Control Module; (LH front engine compartment)
ATS 14 Electronic Control Module; (LH engine compartment), ID 12656993
CTS 14-15 Electronic Control Module; Sdn, 3.6L
COLORADO 15-16 Electronic Control Module; (RH firewall), 3.6L
SIERRA 1500 PICKUP 16 Electronic Control Module; (LH front engine compartment), ID 12662034
SIERRA 1500 PICKUP 16 Electronic Control Module; (LH front engine compartment), ID 12672537
SILVERADO 1500 PICKUP 16 Electronic Control Module; (LH front engine compartment), ID 12662034
YUKON 15-16 Electronic Control Module; (LH front engine compartment)
ESCALADE ESV 15-16 Electronic Control Module; (LH front engine compartment)
SUBURBAN 1500 15-16 Electronic Control Module; (LH front engine compartment)
SIERRA 1500 PICKUP 16 Electronic Control Module; (LH front engine compartment), ID 12673195
SILVERADO 1500 PICKUP 14-15 Electronic Control Module; (LH front engine compartment)
SILVERADO 1500 PICKUP 16 Electronic Control Module; (LH front engine compartment), ID 12673195
SIERRA 1500 PICKUP 15 Electronic Control Module; (LH front engine compartment )
SIERRA DENALI 1500 16 Electronic Control Module, (LH front engine compartment)
TAHOE 15-16 Electronic Control Module; (LH front engine compartment)
Frequently Asked Questions
What exactly is VIN programming?
VIN programming is the process where we load your vehicle’s unique 17-digit Vehicle Identification Number (VIN) and its specific software configuration into the ECM. This ensures the module works perfectly with your engine, transmission, and options package, just like the original one from the factory.
How do I provide my VIN for programming?
It’s simple. After you complete your purchase, you will need to send us your vehicle’s VIN. We will then program the module before shipping it to you, ensuring it’s ready for installation upon arrival.
Will I need special tools for installation?
No special tools are required. Basic hand tools, like a socket set, are all you should need to physically swap the module. The programming is already done for you.
Do I need to perform a security or anti-theft relearn procedure?
Yes, on most GM vehicles of this era, a security relearn procedure is necessary after installing a new ECM. This is a simple process you can do yourself in about 30 minutes with just your car key. We can provide instructions for this procedure.
Is this a guaranteed fix for my vehicle’s problems?
This module is a direct solution for issues caused by a faulty ECM. While it resolves the vast majority of related symptoms, we always recommend proper vehicle diagnostics to confirm the ECM is the root cause of your problem before ordering.