Restore Your Vehicle’s Reliability and Performance
If your GM truck or van is suddenly stalling, refusing to start, or showing a persistent Check Engine Light, the problem often points directly to a failing Engine Control Module (ECM). As a technician with over two decades of experience under the hood, I’ve seen firsthand how a faulty ECM can create a cascade of frustrating, hard-to-diagnose issues. This isn’t just a part; it’s the central computer for your engine, and when it malfunctions, your vehicle’s performance, fuel economy, and reliability suffer. This module is the definitive solution, arriving at your door fully programmed with the latest GM software updates, tailored specifically to your vehicle’s VIN.
From the Diagnostic Bay
I remember a 2012 Express 1500 from a local delivery company that came into my shop. The driver reported intermittent stalling at stoplights and a random no-start condition that would vanish after a few tries. No consistent codes were stored, making it a diagnostic nightmare. After checking fuel pressure and ignition systems, we focused on the ECM. On a hunch, we connected a scope and saw erratic voltage signals from the module under load. Instead of sending the van to a dealership for a costly and time-consuming replacement and programming session, the owner ordered a VIN-programmed unit like this one. The swap took less than 30 minutes, and the van was back in service the same day, running perfectly. It’s a prime example of how the right part, pre-programmed, saves critical time and money.
Is Your GM Truck or Van Showing These Signs?
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine’s computer needs attention. In my shop, these are the classic symptoms we link to a faulty 2010-2014 Savana ECM.
- ✔ Vehicle has trouble starting or won’t start at all.
- ✔ Intermittent stalling, especially when the engine is warm.
- ✔ A noticeable drop in fuel efficiency.
- ✔ The engine runs rough, misfires, or hesitates during acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Check Engine Light is illuminated with communication-related or internal processor fault codes, such as P0601, P0602, P0606, or U0100.
- ✔ Loss of power or sluggish performance.
A Straightforward Guide to Installation
Replacing your ECM is a manageable job for a DIYer or professional mechanic. Our pre-programming service eliminates the most difficult step, so you can get your vehicle running without special scan tools. Follow these general steps for a successful installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for the system capacitors to discharge.
- Locate the ECM: On Savana and Express vans, it’s typically in the LH rear of the engine compartment. On Silverado and Sierra pickups, find it on the LH front, under the battery tray.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harnesses from the old ECM. Inspect the connectors 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 ECM in place and secure it with the original hardware.
- Reconnect Everything: Plug the wiring harnesses firmly into the new module until they click. Reconnect the negative battery terminal.
- Perform Security Relearn: In many cases, you may need to perform a simple key-cycle security relearn. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds. Repeat this cycle 3 times. On the final cycle, the vehicle should start, confirming the new ECM has learned your vehicle’s security key.
Verified Vehicle Compatibility
This Engine Control Module is a direct-fit replacement for several GM workhorses equipped with the 4.3L V6 engine. We guarantee compatibility for the following vehicles, provided your service number matches. Please supply your VIN upon purchase to ensure we load the correct software for your specific application.
CHEVROLET SILVERADO 1500 PICKUP (2010-2013) – Electronic Control Module; (LH front under battery), 4.3L
CHEVROLET EXPRESS 1500 VAN (2010-2014) – Electronic Control Module; (LH rear engine compartment), 4.3L
GMC SIERRA 1500 PICKUP (2010-2013) – Electronic Control Module; (LH front under battery), 4.3L
Compatible Service Numbers: 12635043, 12639471, 12653246
By ordering this pre-programmed 2010-2014 Savana ECM, you’re not just buying a part; you’re getting a complete, hassle-free solution that restores your vehicle’s factory performance and reliability. We handle the complex programming so you can focus on the simple installation.
What do I need to do after I place my order?
What do I need to do after I place my order?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. You can typically send it through the order notes or a follow-up message.
Is this module truly plug-and-play?
What do I need to do after I place my order?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. You can typically send it through the order notes or a follow-up message.
Will this fix my check engine light?
What do I need to do after I place my order?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. You can typically send it through the order notes or a follow-up message.
How do I find my original service number?
What do I need to do after I place my order?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. You can typically send it through the order notes or a follow-up message.
Why is VIN programming so important?
What do I need to do after I place my order?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. You can typically send it through the order notes or a follow-up message.