Is Your Chevrolet Trax Running Rough?
If you’re dealing with a frustrating no-start condition, erratic engine behavior, or a persistent Check Engine Light that won’t go away, a failing Engine Control Module (ECM) is often the culprit. As the brain of your vehicle’s engine, when the ECM starts to fail, it can cause a cascade of problems that are difficult to diagnose. I’ve seen it countless times in my shop: customers come in after replacing sensors and spark plugs, only to find the root issue was the computer itself.
The Smart Solution: A VIN-Programmed ECM
Forget expensive dealership visits and the hassle of towing your vehicle for programming. This ECM is the straightforward, reliable fix you need. We take the complexity out of the repair by professionally programming the module to your vehicle’s specific Vehicle Identification Number (VIN) before we ship it. This means it arrives at your door ready for a direct, plug-and-play installation, loaded with the latest GM software updates to ensure optimal performance and efficiency.
Expert Pro Tip: Check for Contamination Before You Connect
Over my 20+ years turning wrenches, I’ve learned that new parts can be compromised by old problems. Before plugging in your new ECM, take a moment to thoroughly inspect the wiring harness connectors. Look for any signs of green or white corrosion, moisture, or bent pins. Use a quality electronics cleaner and a small brush to gently clean the terminals. A clean, secure connection is absolutely critical for the ECM to function correctly and will prevent future headaches.
Common Symptoms of a Failing 2013 – 2014 Trax ECM
If you’re experiencing any of the following, this module is your likely solution:
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained stalling, especially when coming to a stop.
- ✔ Poor fuel economy and noticeable loss of power.
- ✔ Harsh or incorrect automatic transmission shifting.
- ✔ Multiple, unrelated diagnostic trouble codes (DTCs) stored in memory.
- ✔ Communication errors with your scan tool.
Plug-and-Play Installation: No Dealer Visit Required
Installing your new ECM is a job most DIYers can handle in their own driveway. Just follow these simple steps:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for the system to fully discharge.
- Locate the ECM: On the 2013-2014 Trax, the ECM is typically located in the engine bay. Consult your owner’s manual for the exact position.
- Disconnect the Harnesses: Carefully unclip and disconnect the wiring harnesses from the old module. Inspect the connectors as mentioned in our pro tip.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed module in place and securely reconnect the wiring harnesses. You should hear a distinct click.
- Reconnect the Battery: Reattach the negative battery terminal. The vehicle is now ready to start. No further programming is needed.
Guaranteed Compatibility
This Engine Control Module is a direct replacement for several part numbers and fits a range of GM vehicles. Please verify your part number or vehicle model below.
Replaces Part Numbers: 12679199, 12642927, 12636386, 12621466, 12630789
Fits The Following Models:
- 2013-2014 Chevrolet Trax (1.8L)
- 2011-2012 Chevrolet Cruze (1.8L)
- 2012 Chevrolet Sonic (1.8L)
- 2013 Chevrolet Spark
- 2009-2011 Chevrolet Aveo
- 2009-2010 Pontiac G3 / Wave
Don’t let a faulty computer keep your car off the road. Order today and we’ll ship your VIN-programmed ECM directly to you, ready to restore your vehicle’s performance and reliability.