Restore Peak Performance to Your GM Vehicle
Is your vehicle plagued by erratic behavior, a no-start condition, or a persistent Check Engine light? A failing Engine Control Module (ECM) is often the central cause, disrupting everything from fuel economy to ignition timing and leaving you stranded and frustrated. This professionally programmed GM engine computer is the definitive, reliable solution to restore your vehicle’s performance and get you back on the road with confidence.
Common Symptoms & Your Solution
A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution you need:
- Persistent Check Engine Light (CEL)
- Engine stalling or misfiring
- Poor acceleration and reduced power
- Decreased fuel efficiency
- Erratic or harsh transmission shifting
- Complete no-start or intermittent starting issues
- Communication error codes with diagnostic scan tools
This unit is the direct fix for these problems. We take the guesswork out of the repair by flashing the unit with the latest GM software updates specific to your vehicle’s VIN. This ensures the Programmed GM 12633055 ECM integrates seamlessly with your vehicle’s existing systems.
Features & Benefits
- โ VIN-Specific Programming: We flash this module with the latest GM software updates using your vehicle’s unique VIN. This ensures perfect compatibility and function, eliminating the need for an expensive trip to the dealer for programming.
- โ Direct Replacement: Engineered to meet and exceed original equipment specifications for part numbers 12633055 and 12633238, guaranteeing a precise fit and seamless integration.
- โ Restored Drivability & Efficiency: A correctly functioning ECM is critical for optimal engine performance, ignition timing, and fuel delivery. Replacing your faulty unit will restore lost power, smooth out your idle, and improve fuel economy.
- โ Ready for Installation: This module arrives ready to be installed. In most cases, after installation, you will only need to perform a security relearn procedure, which can often be done without special tools.
- โ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty. Drive with the peace of mind that comes from knowing your investment is protected.
Expert Technician’s Insight
As a veteran technician, I’ve seen countless issues arise from using generic, non-programmed modules. They can cause everything from minor drivability problems to complete system shutdowns. That’s why we insist on programming every Programmed GM 12633055 ECM to your specific VIN. It’s not just about making the part work; it’s about making it work correctly for your vehicle’s unique configuration, ensuring long-term reliability and performance just as the factory intended.
Verified Vehicle Fitment
This Engine Control Module fits a wide array of General Motors vehicles, including popular models like the Corvette, Camaro, Silverado, Sierra, Escalade, Tahoe, Suburban, and Express/Savana vans. It is a direct replacement for part numbers 12633055 and 12633238. To ensure a perfect match, please use the vehicle fitment tool on this page or verify the part number on your original module. A properly matched and Programmed GM 12633055 ECM is essential for your vehicle’s health.
Frequently Asked Questions
Do I need to send my old ECM (core) back?
No. There is no core charge or return required for this part, saving you time and hassle.
Is this ECM truly “plug and play”?
The ECM comes fully programmed to your VIN. For most GM vehicles, you will need to perform a simple security relearn procedure (often called a key relearn or anti-theft relearn) after installation so the module recognizes your keys. This procedure can typically be done without special tools, and we can provide instructions.
What information do you need from me after I order?
After you place your order, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is critical for us to program the module correctly for your specific vehicle configuration.
How do I find my original part number?
The original part number is printed on a sticker or label on your existing ECM. This unit is a direct replacement for OEM part numbers 12633055 and 12633238.
Will this fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty ECM, this part will resolve the issue. However, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the point of failure before ordering.