Restore Peak Performance to Your Chevrolet Tahoe
Is your 2015 or 2016 Chevrolet Tahoe suffering from puzzling engine issues, a persistent Check Engine Light, or a frustrating no-start condition? The Engine Control Module (ECM), the master computer for your vehicle’s powertrain, is often the culprit. This vital component orchestrates everything from fuel injection and ignition timing to emissions control and transmission shifting. When it fails, it can cause a cascade of problems that are difficult to diagnose. This replacement ECM, part number 12673195, is the definitive solution to get your truck running reliably again.
We take the guesswork and complexity out of the repair process. Unlike a generic module from a parts store, this unit is professionally programmed specifically for your vehicle using your VIN. We install the latest, most stable software updates directly from GM, ensuring optimal performance, fuel efficiency, and compatibility with all your vehicle’s systems. This means you receive a part that is ready for installation, saving you a costly trip to the dealership for programming.
Common Symptoms of a Failing 2015-2016 Tahoe ECM
- ✔ Unexplained Check Engine Light (CEL) illumination, often with communication-related trouble codes (U-codes).
- ✔ Engine stalling, stumbling, or misfiring, especially under load.
- ✔ Drastic decrease in fuel economy.
- ✔ The vehicle cranks but refuses to start.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Inability to communicate with the ECM using a diagnostic scan tool.
- ✔ Multiple, unrelated sensor error codes appearing simultaneously.
From the Diagnostic Bay
We recently had a 2015 Tahoe in the shop that was driving the owner crazy. It would randomly stall at red lights and had a check engine light with codes for the camshaft position sensor and an oxygen sensor. The owner had already replaced both sensors twice with no success. After hooking up our professional scan tool, we noticed the live data stream from the ECM was freezing intermittently. This is a classic sign of a failing processor within the module itself. The ECM was sending out false signals, causing the erroneous sensor codes. We installed a VIN-programmed ECM just like this one, performed the security relearn, and the Tahoe ran perfectly. It’s a great reminder that when multiple, unrelated electrical faults appear, the central computer should be a primary suspect.
A True Plug-and-Play Solution
This Engine Control Module is a direct-fit replacement for the original unit in your Tahoe, Escalade, Sierra, or other compatible GM vehicle. It is located in the left-hand (driver’s side) front of the engine compartment. The installation process is straightforward for a competent DIY mechanic or any professional technician. Once you provide us with your vehicle’s VIN during checkout, our experts handle the critical programming phase. When the part arrives at your door, it has the correct software and calibration files for your truck’s specific engine, transmission, and emissions equipment.
Please note that after installation, you will need to perform a simple security relearn procedure (also known as a Passlock or anti-theft relearn). This procedure syncs the new ECM with your vehicle’s existing keys and can typically be done in your driveway in about 30 minutes without any special tools. Instructions for this procedure are widely available online or in your vehicle’s service manual.
This module is a direct replacement for a wide range of part numbers, including: 12692067, 12676230, 12656993, 12662034, 12672537, 12663391, 12672963, and 12669318. It fits an extensive list of GM trucks, SUVs, and performance cars, ensuring broad compatibility and OEM-level function.
Frequently Asked Questions
Do I need to have this ECM programmed?
No. The main benefit of our service is that we program the module for you before it ships. Simply provide your vehicle’s 17-digit VIN when you place your order, and we will load the correct GM-certified software for your specific vehicle configuration.
What do I need to do after I install the module?
After physical installation, you must perform a security relearn procedure. This syncs the new ECM to your vehicle’s anti-theft system and keys. This is a simple, tool-free process that typically takes 30-40 minutes. We can provide instructions if needed.
Where is the ECM located on my 2015-2016 Tahoe?
For the 2015-2016 Tahoe, Yukon, Escalade, and Suburban, the ECM is located in the engine compartment on the driver’s side, near the front.
How can I be sure this part will fit my vehicle?
This module, part number 12673195, is the correct replacement for the vehicles listed in the compatibility chart. By providing your VIN, we double-check the fitment and ensure the programming is a perfect match for your truck’s options and powertrain.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, then yes, this part will resolve the issue. It’s crucial to have your vehicle properly diagnosed to confirm the ECM is the point of failure before ordering. Common indicators include communication codes (U-codes) or multiple, unrelated sensor codes.