Is Your GM Truck or SUV Experiencing Engine Problems?
If your 2010 GMC Sierra 3500, or another compatible GM vehicle, is suffering from a persistent check engine light, erratic engine behavior, stalling, or a complete no-start condition, a failing Engine Control Module (ECM) is a likely culprit. The ECM is the central computer of your vehicle’s powertrain, responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose issues.
Common Symptoms of a Failing ECM
- ✔ Check Engine Light (CEL) is illuminated with various trouble codes, especially communication-related codes (U-codes).
- ✔ Engine misfires, runs rough, or has a stumbling idle.
- ✔ Unexplained drops in fuel economy.
- ✔ The vehicle cranks but refuses to start.
- ✔ Intermittent stalling for no apparent reason.
- ✔ Automatic transmission shifts harshly or at incorrect times.
- ✔ Loss of power and poor acceleration.
- ✔ Inability for a diagnostic scan tool to communicate with the module.
The Plug-and-Play Solution for Your 2010 Sierra 3500 ECM
Replacing an ECM has traditionally been a costly and inconvenient process, requiring a trip to the dealership for expensive programming. This Engine Control Module, part number 12633055 (also replaces 12633238), eliminates that hassle. We provide a complete, ready-to-install solution. When you place your order, simply provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians will then program the module with the latest, most up-to-date factory software directly from GM, ensuring it is perfectly matched to your vehicle’s specific configuration and options.
This means no extra trips to a mechanic or dealer. Once you receive the module, installation is typically straightforward. In most cases, you can simply disconnect the old module, connect the new one, and perform a simple security relearn procedure (often called a key relearn), which can be done without special tools. This gets your truck back on the road quickly and reliably, restoring its original performance and efficiency.
Wide-Ranging GM Compatibility
While this is a perfect solution for the 2010 Sierra 3500 ECM, this versatile module also serves as the brain for a vast array of other popular GM trucks, vans, and performance cars from the era. It is compatible with various engines including the 4.8L, 5.3L, 6.0L, 6.2L, and even the high-performance 7.0L LS7. Models include the Chevrolet Silverado, Suburban, Tahoe, Express, Camaro, Corvette, and Caprice, as well as the Cadillac Escalade and GMC Yukon/Savana. Please review the detailed fitment list to confirm compatibility with your specific vehicle.
Frequently Asked Questions
Does this ECM require additional programming after I receive it?
No. We program the module to your vehicle’s specific VIN before shipping it to you. It arrives ready for installation. A simple security relearn procedure may be required after installation, which you can typically do yourself.
Where do I find my vehicle’s VIN?
Your 17-digit VIN can be found on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a difficult part to install?
For someone with basic mechanical skills, the physical installation is typically straightforward. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. The most important step is ensuring you provide the correct VIN for programming.
Will this fix my check engine light?
If the check engine light and other symptoms are being caused by a faulty ECM, this replacement part will resolve those issues. It is crucial to have your vehicle properly diagnosed to confirm the ECM is the point of failure before ordering.
What if my original part number is 12633238?
This module, part number 12633055, is a direct replacement for service number 12633238. It is fully compatible and will be programmed to function identically in your vehicle.