Get Your GM Vehicle Running Right Again
Is your work van, truck, or SUV suddenly running rough, refusing to start, or flashing a check engine light that points to a faulty engine computer? A failing Engine Control Module (ECM) can bring your vehicle to a dead stop, costing you time, money, and peace of mind. This pre-programmed ECM is the definitive, hassle-free solution to get you back on the road. We flash this module with the latest GM software updates specifically for your vehicle’s VIN, ensuring it’s ready for installation right out of the box.
Common Symptoms & Your Solution
A failing ECM can cause a wide range of confusing and frustrating issues. If you’re experiencing any of the following, a faulty module is a likely culprit:
- Complete no-start condition or intermittent starting
- Engine stalling, sputtering, or misfiring
- Poor fuel economy and reduced engine power
- Check Engine Light with communication error codes (U-codes)
- Seemingly random warning lights on the instrument cluster
- Transmission shifting issues or harsh engagement
Instead of wrestling with a trip to the dealership for expensive programming, this module provides a direct path to a reliable repair. This is the correct, professionally programmed 2018 Savana 3500 ECM 12704475 that will restore your vehicle’s performance and reliability.
Features & Benefits
- âś” VIN-Specific Programming: We flash the module with your vehicle’s exact VIN, ensuring perfect compatibility with its specific options and systems.
- âś” Latest GM Software: Your ECM arrives with the most current factory calibrations for optimal performance, fuel efficiency, and emissions control.
- âś” Plug-and-Play Design: This unit is designed for a straightforward installation, eliminating the need for special dealer programming tools for the core software.
- âś” Broad Compatibility: A direct replacement for multiple part numbers, including 12704475, 12692069, 12680656, 12686383, and 12688528.
- âś” This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
In modern vehicles, the ECM is the central brain. It doesn’t just manage the engine; it communicates constantly with the transmission, ABS, security system, and body control modules. Simply swapping a used ECM from another vehicle won’t work—it’s like trying to use the wrong key for a lock. Our VIN-programming service ensures the ECM recognizes and communicates correctly with all other systems in your specific vehicle. This critical step prevents a host of issues, from a no-start condition due to the anti-theft system to incorrect transmission shifting, making it the only way to guarantee a successful repair.
This 2018 Savana 3500 ECM 12704475 is your solution for a lasting repair that restores your vehicle to factory specifications. Order today and provide your VIN to get the right part, programmed and ready to go.
Frequently Asked Questions
Do I need to send my old ECM back?
No, there is no core charge or need to return your old module. This is a direct purchase, simplifying the process for you.
What is a ‘theft relearn’ and will I need to do it?
A theft relearn, or security relearn, synchronizes the new ECM with your vehicle’s existing anti-theft system and keys. In many cases after installation, if the vehicle does not start, this procedure will be required. It is a standard step that must be performed using a GM-specific scan tool like Tis2web/Techline Connect. This is the responsibility of the installer.
Is this ECM difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery and swapping the module. However, post-installation procedures like the theft relearn, crankshaft position relearn, or injector flow rate programming (if applicable) require professional tools and knowledge. We always recommend installation by a qualified technician.
How do I provide my VIN number?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically reply to your order confirmation email or follow the instructions provided after checkout. We cannot program and ship the module without your VIN.
Will this fit vehicles other than the Savana 3500?
Yes. This ECM is a compatible replacement for a wide range of 2018-2019 GM vehicles, including the Corvette, Silverado/Sierra 1500, Tahoe, Suburban, Escalade, and more. Please refer to the detailed fitment list on this page to confirm it matches your specific model and engine option.