Get Your Vehicle Back on the Road, Fast.
Is your truck or car suffering from a persistent check engine light, erratic performance, or a no-start condition? A failing Engine Control Module (ECM) is often the culprit, disrupting your vehicle’s most critical functions. This isn’t just an inconvenience—for a work vehicle like a Savana or Silverado, it’s a direct hit to your productivity. We offer a dependable, straightforward solution: a professionally programmed 12670335 ECM, flashed specifically to your vehicle’s VIN with the latest GM factory software updates. This is the definitive fix to restore your engine’s reliability and performance, getting you back to work and back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty computer is the likely cause. This module is the solution for issues such as:
- Check Engine Light (CEL) with communication-related DTCs (e.g., P0601, P0606)
- Engine stalling, stumbling, or misfiring
- Complete no-start or intermittent starting problems
- Poor fuel economy and reduced engine power
- Failure to pass emissions testing
- Erratic transmission shifting behavior
Installing our Programmed 12670335 ECM is the most effective way to permanently resolve these frustrating and costly problems.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: This module arrives ready for installation, saving you a costly trip to the dealership for programming. Just provide your VIN at checkout, and we handle the rest.
- ✔ Loaded with the Latest GM Updates: Your ECM will be flashed with the most current factory software, ensuring your engine operates with optimal performance, fuel efficiency, and emissions control.
- ✔ Direct-Fit Replacement Solution: Engineered to replace a wide range of original part numbers including 12668866, 12668994, 12643636, and more, guaranteeing a perfect match for your vehicle.
- ✔ Restores Factory Operation: The definitive solution for issues like check engine lights, stalling, no-start conditions, and erratic engine behavior.
- ✔ This unit is backed by our one-year replacement warranty: Purchase with confidence knowing your investment is protected against defects.
Expert Insight: The Importance of Correct Programming
From over 20 years of hands-on diagnostics, I can tell you that an ECM is not a simple ‘plug-and-play’ part from the factory. Each one is a blank slate that must be programmed with software specific to a vehicle’s VIN. This programming dictates everything from fuel injection timing to transmission shift points. Skipping this step or using incorrect software is a recipe for disaster, leading to persistent performance issues or even a non-running vehicle. We take this critical step out of your hands by programming the module before it ships, ensuring that when you install our Programmed 12670335 ECM, you’re installing a component that is perfectly matched to your vehicle’s specific requirements.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. Please double-check it for accuracy to ensure a perfect match.
Will I need to do any additional programming after installation?
In most cases, no additional programming is required. Our service covers the main engine operating software. However, some vehicles may require a simple security relearn procedure (often called a CASE relearn or anti-theft relearn) which can typically be done without special tools. Instructions are widely available online for this process.
Is this a brand new part?
This is a high-quality, inspected, and tested original equipment part that has been professionally programmed to meet or exceed factory specifications. It provides the same reliability and performance as a new dealer part.
What if my original part number isn’t on the list?
The part numbers listed (like 12668866, 12643636, etc.) are the most common, but this ECM services many others. If your part number is not listed but your vehicle make, model, and year match the fitment chart, this module will work. The key is programming it to your specific VIN.
How does the one-year replacement warranty work?
This unit is backed by our one-year replacement warranty. If the module fails due to a defect within one year of the purchase date, we will provide a replacement unit. This gives you peace of mind in your repair.