Is Your Savana 3500 Sidelined? Let’s Get Your Business Rolling Again.
As a mechanic with over two decades of experience, I know that when a workhorse like your 2010-2015 Savana 3500 is down, it’s not just an inconvenienceโit’s a direct hit to your bottom line. You’re likely here because you’re dealing with frustrating, hard-to-diagnose issues. Maybe it’s a sudden no-start condition in the morning, erratic idling that makes you nervous at stoplights, or a dashboard lit up with warning lights and a ‘Service Engine Soon’ message that won’t go away. These aren’t just minor glitches; they’re classic signs that the brain of your engine, the Engine Control Module (ECM), is failing.
The ECM, also known as the engine computer, is responsible for managing everything from fuel injection and ignition timing to transmission shift points and emissions controls. When it starts to fail, the symptoms can be all over the place, making diagnosis a real challenge for even seasoned technicians.
A Real-World Diagnostic Story
“A customer’s 2014 Savana 3500 came into my shop last month with a problem that was driving him crazy. The van would randomly lose power, the transmission would shift hard, and occasionally it just wouldn’t start. He’d already replaced the battery and alternator. After hooking up my professional scan tool, I noticed intermittent communication loss with the ECM (code U0100). We checked the wiring and groundsโthey were perfect. Experience pointed straight to the ECM. Heat and vibration, especially in a hard-working van, had taken their toll on the internal circuits. We installed a VIN-programmed ECM, performed the security relearn, and the van has been running flawlessly for his plumbing business ever since.”
The Right Solution: A VIN-Programmed, Ready-to-Install ECM
Don’t waste time and money chasing symptoms or paying steep dealership prices for programming. This is a direct-fit replacement ECM, part number 12633055 (also interchangeable with 12633238), that arrives at your door specifically programmed for YOUR vehicle. We take the guesswork out of the repair.
Hereโs how our process works for you:
- โ Provide Your VIN: After you place your order, simply send us your 17-digit Vehicle Identification Number (VIN).
- โ We Handle the Programming: Our technicians use your VIN to flash the ECM with the latest, most stable software updates directly from GM. This ensures your engine, transmission, and all factory options work together exactly as they should.
- โ Install and Go: In most cases, the installation is straightforward. Once installed, you may need to perform a simple ‘Security Relearn Procedure’ (often called a ‘key relearn’), which can typically be done in your driveway without any special tools. This syncs the new ECM with your vehicle’s anti-theft system.
Common Symptoms of a Failing GM ECM:
If you’re experiencing any of the following, a faulty ECM is a very likely culprit. I’ve personally traced these symptoms back to the ECM hundreds of times on this GM platform.
- โ Check Engine Light is on with various communication or sensor codes.
- โ Vehicle refuses to start, or starts and immediately stalls.
- โ Poor fuel economy and noticeable loss of power.
- โ Harsh or erratic automatic transmission shifting.
- โ Engine misfires, stumbles, or runs rough.
- โ Issues with the anti-theft system (Passlock/VATS).
Guaranteed Fitment for Your GM Vehicle
While this is the perfect solution for your Savana 3500, this versatile ECM is also the correct part for a wide range of GM vehicles. Please verify your original part number is 12633055 or 12633238. This computer is a confirmed fit for the following models:
GM Vans:
- โ Express 1500/2500/3500 Van (2010-2015): Fits 4.8L, 5.3L, and 6.0L engines.
- โ Savana 1500/2500/3500 Van (2010-2015): Fits 4.8L, 5.3L, and 6.0L engines.
GM Trucks & SUVs:
- โ Silverado & Sierra 1500/2500/3500 (2010-2013): Fits 4.8L, 5.3L, 6.0L, and 6.2L engines.
- โ Avalanche, Suburban, Tahoe, Yukon / Yukon XL (2010-2014): Check fitment notes for specific options.
- โ Escalade, Escalade ESV/EXT (2010-2014): Fits 6.2L engines.
GM Performance & Sedans:
- โ Camaro (2010-2015): Fits 6.2L and 7.0L engines.
- โ Corvette (2010-2013): Fits 6.2L (LS3) and 7.0L (LS7) engines.
- โ Caprice / SS Caprice (2011-2017): Fits 6.0L engines.
Restore your vehicle’s reliability and performance with an ECM that’s programmed correctly from the start. Get your truck, van, or car back on the road where it belongs.