Restore Your Truck’s Performance and Reliability
Is your 2014-2016 Silverado 1500 suffering from a persistent Check Engine Light, erratic performance, or a frustrating no-start condition? The Engine Control Module (ECM) is the brain of your vehicle’s powertrain, managing everything from fuel delivery and ignition timing to transmission shifting. When it fails, it can cause a cascade of problems that can leave you stranded. This genuine GM Engine Control Module, part number 12673195, is the definitive solution to get your truck back to factory-spec operation.
As a technician with over two decades of experience, I’ve seen firsthand how a failing ECM can mimic a dozen other issues. You can waste hundreds of dollars chasing sensors and wiring problems when the core issue is the module itself. This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork out of the repair by professionally programming the module to your truck’s specific Vehicle Identification Number (VIN) before it ships. This ensures all factory settings and the latest GM software updates are loaded, making the installation process as smooth as possible.
Case Study: The Intermittent Stall
A customer brought in his 2015 Sierra 1500 with a perplexing issue: it would randomly stall at traffic lights, with no consistent Check Engine Light. When we scanned it, we found a history of U0100 (Lost Communication with ECM) codes. We checked the main power and ground circuits to the ECM and found them solid. We even load-tested the circuits to be sure. After hours of diagnostics, we connected a scope to the CAN bus network. We saw the data signal drop out precisely when the engine would stumble. This pointed directly to an internal failure in the 2014-2016 Silverado 1500 ECM. The processor was failing under specific thermal conditions. We installed a VIN-programmed module, performed the security relearn, and the truck ran flawlessly. It’s a classic example of how a faulty module can create ghost-like symptoms.
Is Your Truck Exhibiting These Telltale Signs?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, a faulty module is a likely culprit:
- âś” Check Engine Light is on with communication-related codes (e.g., U0100) or internal processor fault codes (e.g., P0601, P0606).
- âś” Engine cranks but refuses to start.
- âś” Unexplained drop in fuel economy.
- âś” Rough idling, stalling, or hesitation during acceleration.
- âś” Automatic transmission shifts harshly or at the wrong times.
- âś” Failure to pass state emissions testing.
- âś” Other modules on the vehicle report a loss of communication with the ECM.
A Straightforward Guide to Installation
Installing your new 2014-2016 Silverado 1500 ECM is a manageable job for a DIYer with basic tools. While this module comes programmed, a final security relearn procedure is typically required to sync it with your vehicle’s anti-theft system. This can often be done without a scan tool.
- Safety First: Disconnect the negative terminal from your truck’s battery.
- Locate the ECM: On most 2014-2016 Silverado/Sierra models, the ECM is located in the front of the engine compartment on the driver’s side, near the air filter housing.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harness connectors from the old module. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place.
- Reconnect Everything: Securely plug the wiring harnesses into the new module. You’ll hear a click as they lock. Reconnect the negative battery terminal.
- Perform Security Relearn: This is a critical final step. A common method is the “10-Minute Relearn”: Turn the key to the “ON” position (don’t start the engine), and leave it for 10-12 minutes until the security light turns off or stops flashing. Turn the key off for 10 seconds, then repeat the process two more times for a total of 3 cycles and about 30 minutes. After the third cycle, the vehicle should start and run normally.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM trucks, SUVs, and cars. Please verify your part number or contact us with your VIN to confirm compatibility. This part replaces part numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, 12669318.
- Chevrolet Silverado 1500: 2014, 2015, 2016
- GMC Sierra 1500 / Denali 1500: 2014, 2015, 2016
- Chevrolet Tahoe / Suburban 1500: 2015, 2016
- GMC Yukon / Yukon XL 1500: 2015, 2016
- Cadillac Escalade / ESV: 2015, 2016
- Chevrolet Colorado / GMC Canyon: 2015-2016 (3.6L)
- Chevrolet Camaro: 2016 (6.2L)
- Chevrolet Corvette: 2014, 2015, 2016
- Cadillac ATS: 2014, 2015, 2016 (3.6L)
- Cadillac CTS: 2014, 2015 (3.6L Sedan), 2016 (3.6L or 6.2L)
- Cadillac XTS: 2014, 2015, 2016 (3.6L)
This is a high-quality, inspected, and tested OEM component guaranteed to function to factory specifications. Each module is verified before being programmed and shipped.