Is Your Work Van Unreliable? Get Back on the Road Fast.
As a technician with over two decades of experience, I know that a dependable van is not a luxury—it’s your livelihood. When your 2010-2014 Savana 1500 starts acting up with baffling electrical issues, a no-start condition, or a persistent Check Engine light, the Engine Control Module (ECM) is often the culprit. This isn’t just an inconvenience; it’s lost time and money. You need a solution that’s fast, reliable, and doesn’t require a costly trip to the dealership. That’s exactly what this pre-programmed ECM offers.
The Simple, Dealer-Free Solution for Your 2010-2014 Savana 1500 ECM
Forget about towing your van to a dealer, waiting for days, and paying exorbitant programming fees. We’ve streamlined the entire process. This module, part number 12653246, arrives at your door programmed with the latest official GM software, specifically matched to your vehicle’s unique Vehicle Identification Number (VIN). It’s a true plug-and-play fix that restores your van’s performance and gets you back to work.
Expert Pro Tip: Pre-Installation Connector Check
Before installing your new ECM, take a moment to inspect the main electrical harness connector. Over the years, I’ve seen countless ECMs misdiagnosed when the real issue was corrosion or a bent pin inside the connector. Use a bright flashlight to look for any green or white crusty buildup. If you see any, clean it carefully with a small brush and electrical contact cleaner. A clean, solid connection is critical for the new module to function correctly and will save you from future headaches.
Common Symptoms of a Failing GM 4.3L ECM:
If your Savana, Express, Silverado, or Sierra is experiencing any of the following, a failing ECM is the likely cause:
- ✔ Engine stalls unexpectedly while driving or at idle.
- ✔ Complete no-start condition, even with a good battery and starter.
- ✔ Check Engine Light is on with communication error codes.
- ✔ Poor or erratic automatic transmission shifting.
- ✔ Noticeable decrease in fuel economy.
- ✔ Misfire codes that don’t resolve with new plugs or coils.
Plug-and-Play Installation: No Dealer Visit Required
Installing your new ECM is a straightforward process you can do right in your driveway. On the Savana and Express vans, the ECM is located in the left-hand rear of the engine compartment.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the ECM: Find the module in the LH rear of the engine compartment. It will have several large electrical connectors attached.
- Disconnect the Harnesses: Carefully release the locking tabs on each electrical connector and pull them straight out from the module. Do not force them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed ECM into place.
- Reconnect Everything: Firmly plug the electrical harnesses back into the new module until they click and lock. Reconnect the negative battery terminal.
- Perform Security Relearn (If Needed): In most cases, the vehicle will start right up. Some vehicles may require a simple 10-minute security relearn procedure, which can be done with just the key. Instructions are readily available online or can be provided.
Guaranteed Compatibility
This ECM is a direct replacement for service number 12653246 and is also fully compatible with modules bearing service numbers 12635043 and 12639471. It fits the following vehicles equipped with the 4.3L V6 engine:
- 2010-2014 GMC Savana 1500 Van
- 2010-2014 Chevrolet Express 1500 Van
- 2010-2013 GMC Sierra 1500 Pickup
- 2010-2013 Chevrolet Silverado 1500 Pickup
Your van is the backbone of your business or your go-to vehicle for tough jobs. Don’t let a faulty computer keep it sidelined. Order today, provide your VIN, and get a reliable, ready-to-install solution delivered to your door.