Restore Peak Performance to Your GM Vehicle
Is your truck, van, or SUV suffering from frustrating issues like stalling, erratic shifting, a persistent check engine light, or a no-start condition? The Engine Control Module (ECM) is the brain of your vehicle, and when it fails, it can cause a wide range of performance problems. This pre-programmed ECM is the definitive, hassle-free solution to get your vehicle running reliably again. We take all the guesswork out of the repair by flashing this computer with the latest GM software updates, specifically matched to your vehicle’s VIN. This isn’t just a replacement part; it’s a restoration of your vehicle’s factory-intended operation and reliability.
Common Symptoms of a Failing GM ECM & Your Solution
A faulty engine computer can be difficult to diagnose, but it often reveals itself through one or more of the following symptoms. If you’re experiencing these issues, this professionally programmed ECM is your solution.
- Persistent Check Engine Light (CEL)
- Engine Stalling or Cutting Out Randomly
- Noticeable Decrease in Fuel Economy
- Engine Misfires or Rough Idle
- Harsh or Incorrect Transmission Shifting
- Complete No-Start or Intermittent Starting Problems
- Communication Errors with Diagnostic Scan Tools
By installing our precisely configured 2010-2013 Yukon XL 2500 ECM 12633055, you are directly addressing the root cause of these electronic failures and restoring the critical link between your vehicle’s engine and its computer.
Features & Tangible Benefits
- โ VIN-Specific Programming Included: We program the module to your exact VIN before shipping. This ensures perfect compatibility with your vehicle’s systems, including the immobilizer, saving you a costly trip to the dealership.
- โ Loaded with Latest GM Updates: Your ECM arrives with the most current factory software. This often corrects underlying drivability issues and can improve fuel efficiency and emissions performance beyond the original calibration.
- โ True Plug-and-Play Installation: Because the programming is done for you, installation is straightforward. Simply disconnect the battery, swap the modules, and reconnect. No special tools or dealer intervention is required.
- โ Guaranteed Fit & Function: This module is a direct replacement for part numbers 12633055 and 12633238, covering a wide range of GM trucks, vans, and performance cars.
- โ Purchase with Confidence: This unit is backed by our one-year replacement warranty. We stand behind our work, giving you peace of mind with your purchase.
Expert Insight: Why VIN Programming is Non-Negotiable
As a veteran tech, I’ve seen countless vehicle owners get stuck with a generic, unprogrammed computer. On modern GM vehicles, the ECM is tied directly to the anti-theft system (VATS/Passlock) and communicates with every other module, from the transmission to the instrument cluster. Without precise VIN programming, the vehicle simply won’t start, or it will run in a reduced power mode with numerous warning lights. Our process eliminates this entire headache. We ensure the digital “handshake” between the new ECM and your vehicle is perfect from the moment you turn the key.
Frequently Asked Questions
Do I need to do any programming myself?
No. This ECM is a complete plug-and-play solution. We handle all the necessary programming using your VIN before the part is shipped to you, ensuring it is ready for installation right out of the box.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically find your VIN on your vehicle’s dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your insurance and registration documents.
Will this fix my check engine light?
If the check engine light and associated diagnostic trouble codes (DTCs) are being caused by a faulty ECM, then yes, this part will resolve the issue. It’s crucial to ensure a proper diagnosis has been performed to confirm the original ECM is the point of failure.
My original part is number 12633238. Will this work?
Yes, absolutely. This ECM, part number 12633055, is a fully compatible and direct replacement for part number 12633238. It will function identically in all specified applications.
Is any other “relearn” procedure required after installation?
In many cases, no further action is needed. However, on some GM vehicles, a Crankshaft Position System Variation (CASE) relearn may be required to clear a P0315 code and ensure optimal ignition timing. This is a simple procedure that can be performed with most professional-grade scan tools.