Is Your Chevy Cruze Running Rough or Showing a Check Engine Light?
As a mechanic with over two decades of experience under the hood, I’ve seen countless drivers frustrated by persistent engine problems. A check engine light that won’t go away, sputtering acceleration, poor fuel economy, or even a vehicle that refuses to start can bring your day to a halt. Often, the root cause isn’t a simple sensor—it’s the very brain of the engine: the Engine Control Module (ECM).
This isn’t just a replacement part; it’s a complete, hassle-free solution. We are offering a genuine GM Engine Control Module, part number 12643636, that comes fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). This means it arrives at your door with the latest GM software updates already installed, ready for a straightforward installation.
From the Shop Floor: A Real-World Diagnosis
“A customer’s 2014 Cruze came in last week with a persistent P0300 random misfire code and a noticeable hesitation. They had already replaced the spark plugs, ignition coil pack, and even the fuel injectors, but the problem remained. After hooking up our diagnostic scanner and monitoring live data, we noticed the injector pulse width for cylinder 3 was erratic. A quick check of the wiring confirmed it was sound. The true culprit was a failing injector driver inside the original ECM. We installed one of these VIN-programmed modules, performed the security relearn, and the engine ran perfectly. This saved the customer from more guesswork and unnecessary parts expenses.”
Common Symptoms of a Failing ECM:
- ✔ Persistent Check Engine Light (CEL)
- ✔ Engine stalling or misfiring
- ✔ Noticeable loss of engine power and acceleration
- ✔ Decreased fuel efficiency
- ✔ Vehicle entering “limp mode”
- ✔ Complete no-start condition
- ✔ Communication errors with diagnostic scan tools
Why Choose a VIN-Programmed 2012-2016 Cruze Engine Control Module?
The ECM is the central computer for your engine, managing everything from fuel mixture and ignition timing to transmission shifting and emissions controls. A generic, non-programmed module simply won’t work. Our service eliminates the need for an expensive trip to the dealership for programming. By providing us with your VIN during checkout, you receive a module that is truly plug-and-play, restoring the precise performance your vehicle was designed for.
Simple, Direct-Fit Installation
Replacing your ECM is a manageable job for a confident DIYer. Follow these general steps to get your vehicle back in top shape:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow all systems to power down.
- Locate the ECM: On most compatible vehicles like the Cruze or Sonic, the ECM is located in the engine bay, often near the battery or firewall.
- Disconnect Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the old module. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed ECM and securely re-attach the wiring harness connectors. You should hear a click as they lock into place.
- Reconnect Battery: Re-attach the negative battery terminal.
- Perform Security Relearn: You will need to perform a simple key-cycle security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeating this process three times. This allows the new ECM to sync with your vehicle’s anti-theft system.
Cross-Reference Part Numbers:
This module is a direct replacement for the following GM part numbers: 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, and 12692200.
Verified Vehicle Fitment:
This ECM is compatible with a wide range of GM vehicles. Please verify your part number or consult your mechanic to ensure proper fitment for your specific model and options.
- Buick Encore: 2013-2016 (1.4L)
- Cadillac ELR: 2014-2016 (Gasoline)
- Chevrolet Cruze: 2012-2016 (Gasoline, including 1.4L and Limited models)
- Chevrolet Express/GMC Savana Vans (2500/3500): 2016 (4.8L, 6.0L)
- Chevrolet Silverado/GMC Sierra Trucks (2500/3500): 2012-2016 (6.0L, including Denali)
- Chevrolet Sonic: 2012-2016 (including 1.4L)
- Chevrolet Spark: 2014-2015 (Gasoline)
- Chevrolet Suburban 3500: 2016
- Chevrolet Trax: 2013-2016
- Chevrolet Volt: 2011-2015 (Gasoline)