Restore Peak Performance to Your Suburban with a VIN-Programmed Engine Control Module
Is your 2015-2016 Chevrolet Suburban 1500 running rough, stalling unexpectedly, or showing a persistent Check Engine Light? These are classic signs that the vehicle’s central computer—the Engine Control Module (ECM)—is failing. As a technician with over 20 years of experience, I’ve seen firsthand how a faulty ECM can cause a cascade of frustrating and hard-to-diagnose issues. This isn’t just an inconvenience; it affects your vehicle’s reliability, fuel efficiency, and safety. Don’t let a bad module keep your truck off the road or force you into an expensive dealership visit.
This is a direct-fit replacement Engine Control Module, part number 12673195, for your Suburban. The most significant benefit we offer is our professional programming service. Before we ship the module, we will flash it with the latest GM-certified software updates, specifically matched to your vehicle using the VIN you provide. This means it arrives at your door ready for installation, saving you the time, hassle, and high cost of dealership programming. This is the most straightforward way to get your 2015-2016 Suburban 1500 ECM replaced and your truck running like new again.
Case Study: A Tricky Diagnosis
I remember a 2015 Suburban that came into my shop with a very intermittent no-start condition. The owner had already replaced the battery and starter with no luck. The vehicle would start fine for a week, then refuse to crank for an hour. There were no consistent trouble codes, just a few random communication errors (U0100). After checking all the power and ground circuits to the ECM, we noticed a slight voltage drop only when the module was hot. We swapped in a pre-programmed ECM, and the problem vanished instantly. It’s a perfect example of how heat and internal component failure can create ghost-like issues that a simple module replacement can solve permanently.
Is Your Suburban Showing These Symptoms?
A failing ECM can manifest in many ways. If you’re experiencing any of the following, the ECM is a likely culprit. Confirming your diagnosis is key before ordering any part.
- ✔ Unexplained Check Engine Light illumination
- ✔ Stored diagnostic trouble codes (DTCs) like P0601, P0606, or U0100
- ✔ Engine stalling, stumbling, or hesitating during acceleration
- ✔ A complete no-start or intermittent starting condition
- ✔ Noticeable decrease in fuel economy
- ✔ Poor or rough idling
- ✔ Transmission shifting issues or harsh shifts
- ✔ Problems with other electronic systems tied to the ECM
A Straightforward Guide to Installation
Installing your new 2015-2016 Suburban 1500 ECM is a manageable job for a DIY enthusiast with basic tools. Following these steps ensures a smooth process. Remember, your new module comes programmed, but a security relearn procedure is often required.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- Locate the ECM: On the 2015-2016 Suburban, the ECM is typically found in the engine compartment on the driver’s side (LH side), near the firewall or inner fender.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harness connectors from the old ECM. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the mounting hardware, as you will need it for the new module.
- Install the New ECM: Mount the new module securely onto the bracket and reconnect the wiring harnesses. Ensure they click firmly into place.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Security Relearn: Most GM vehicles require a security relearn procedure to allow the engine to start. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. Consult your owner’s manual or a reliable online resource for the exact procedure for your vehicle.
Will This Fit My Vehicle?
This module is a direct replacement for part number 12673195 and is compatible with a wide range of GM cars, trucks, and SUVs. Please verify your part number or match your vehicle from the list below. Providing your VIN at checkout is essential for us to ensure perfect programming and compatibility for your specific vehicle.
This part is a confirmed fit for the following vehicles:
- ✔ 2015-2016 Suburban 1500
- ✔ 2015-2016 Tahoe
- ✔ 2015-2016 Escalade & Escalade ESV
- ✔ 2015-2016 Yukon & Yukon XL 1500
- ✔ 2014-2016 Silverado 1500 Pickup (check ID)
- ✔ 2014-2016 Sierra 1500 & Sierra Denali 1500 (check ID)
- ✔ 2014-2016 Corvette
- ✔ 2014-2016 Cadillac CTS, ATS, XTS (check engine/options)
- ✔ 2016 Camaro (6.2L)
- ✔ 2015-2016 Colorado & Canyon (3.6L)
This module also interchanges with part numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12663391, 12672963, and 12669318. Ordering this part ensures you receive a reliable, correctly programmed 2015-2016 Suburban 1500 ECM.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the correct GM software for your Suburban’s specific options, engine, and transmission. This ensures the module works perfectly out of the box, just like one from the factory.
Is this part difficult to install?
The physical installation is straightforward, requiring only basic hand tools to unbolt the old unit and mount the new one. The most critical step is performing the security relearn procedure afterward, which does not require special tools.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (like code P0601), then yes, this part will resolve the issue. However, if the light is on due to a faulty sensor or other component, that part will still need to be addressed.
What is the security relearn procedure?
It’s a process that syncs your new ECM with the vehicle’s anti-theft system. Without it, the vehicle will not start. The standard procedure involves cycling the ignition key and waiting, but we recommend checking a service manual for the exact steps for your year and model.
Is this a new part?
This is a high-quality, tested, and verified used OEM part. Each module is thoroughly inspected and then programmed with the latest software for your VIN, ensuring OEM-level reliability and performance.