Restore Your Truck’s Performance and Reliability
Is your 2014-2016 Sierra 1500 acting up? Frustrating issues like intermittent stalling, a persistent check engine light, or a dreaded no-start condition often point to one culprit: a failing Engine Control Module (ECM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can wreak havoc on a vehicle’s entire system, leading to incorrect diagnoses and wasted money on unnecessary parts. This isn’t just a component; it’s the brain of your engine, and when it falters, your truck’s performance, fuel economy, and reliability suffer.
We offer a straightforward, dependable solution. This genuine Engine Control Module, part number 12673195, arrives at your door fully programmed with the latest GM software updates. All we need is your vehicle’s VIN at checkout. This critical step ensures perfect compatibility and function, saving you a costly trip to the dealership and the hassle of finding a shop with the right programming equipment. Get the right part, programmed correctly, the first time.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2015 Silverado that came into the bay with a problem that had stumped two other shops. The owner complained of random stalling at red lights and occasional difficulty starting, but with no consistent check engine codes. We checked fuel pressure, sensors, and wiring—everything seemed fine. On a hunch, I monitored the network communication data. I saw intermittent data dropouts from the ECM, a classic ‘ghost’ that a standard code reader would miss. The internal processor was failing under specific thermal conditions. We installed a VIN-programmed ECM just like this one, and the truck ran perfectly. It’s a reminder that for complex electronic issues, the solution is often a quality, correctly programmed core component.
Is Your Truck Showing These Signs of ECM Failure?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, this module is likely the solution you need. Look out for:
- âś” Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
- âś” Engine stalls unexpectedly or runs rough.
- âś” Vehicle won’t start, or has difficulty starting.
- âś” Noticeable decrease in fuel economy.
- âś” Transmission shifting issues or harsh shifts.
- âś” Communication errors with other modules (U-codes).
A Straightforward Guide to Installation
Installing your new 2014-2016 Sierra 1500 ECM is a job most DIYers can handle in their own driveway. Our pre-programming service makes it a near plug-and-play process.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the ECM: On most 2014-2016 Sierra and Silverado models, the ECM is found in the front of the engine compartment on the driver’s side, near the air filter housing.
- Disconnect the Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the module. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you will reuse it.
- Install the New ECM: Mount your new, pre-programmed module onto the bracket and securely fasten it.
- Reconnect Everything: Plug the wiring harnesses back into the new ECM until they click into place. Reconnect the negative battery terminal.
- Final Step (If Needed): In some cases, a security relearn procedure may be required for the vehicle to start. This procedure is simple and can be done without special tools. Instructions are readily available online or in your owner’s manual.
Verified Vehicle Compatibility
This module is a direct replacement for part number 12673195 and is interchangeable with several other part numbers, ensuring a wide range of compatibility. Please verify your vehicle is on this list. This module fits:
- âś” Cadillac ATS: 2014-2016
- âś” Cadillac CTS: 2014-2016
- âś” Cadillac Escalade / ESV: 2015-2016
- âś” Cadillac XTS: 2014-2016
- âś” Chevrolet Camaro: 2016
- âś” Chevrolet Colorado: 2015-2016
- âś” Chevrolet Corvette: 2014-2016
- âś” Chevrolet Silverado 1500: 2014-2016
- âś” Chevrolet Suburban 1500: 2015-2016
- âś” Chevrolet Tahoe: 2015-2016
- âś” GMC Canyon: 2015-2016
- âś” GMC Sierra 1500 / Denali 1500: 2014-2016
- âś” GMC Yukon / Yukon XL 1500: 2015-2016
This part is a direct replacement for the following part numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, 12669318.
Frequently Asked Questions About Your 2014-2016 Sierra 1500 ECM
Frequently Asked Questions
Do I need to take this ECM to a dealer for programming?
No. We handle all the programming for you before we ship the part. Just provide your vehicle’s VIN during checkout, and it will arrive ready for installation with the latest GM software.
What information do you need to program the module?
We only need your 17-digit Vehicle Identification Number (VIN). This allows us to flash the ECM with the exact software and calibrations for your truck’s specific options.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic tools, this is a straightforward job that takes less than an hour. The main steps are disconnecting the battery, swapping the modules, and reconnecting everything.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (like diagnostic trouble code P0601), then yes, this module will resolve the issue. It’s crucial to ensure the ECM is the actual point of failure.
What is a security relearn procedure?
This is a simple process that syncs the new ECM with your vehicle’s anti-theft system. It typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating a few times. It requires no special tools.
Where is the ECM located on my 2015 Sierra 1500?
The Engine Control Module is located in the engine bay, on the driver’s side (LH side) toward the front, typically mounted near the air filter box.