Restore Your Vehicle’s Performance and Reliability
Is your Silverado, Escalade, or Corvette suffering from frustrating issues like a persistent Check Engine Light, poor performance, or even a no-start condition? A failing Engine Control Module (ECM) is often the culprit, leaving you stranded and stressed. This genuine GM engine computer, programmed specifically to your vehicle’s VIN, is the definitive solution to get you back on the road with confidence. We take the guesswork out of the repair by flashing the module with the latest, most stable software updates from GM before it ever leaves our facility.
Common Symptoms & Your Solution
A faulty ECM can manifest in numerous ways, disrupting your vehicle’s complex systems. If you’re experiencing any of the following, this pre-programmed module is your answer:
- Erratic engine behavior, such as stalling, misfiring, or rough idling
- Failure to start or intermittent starting problems
- Active Check Engine Light with communication-related Diagnostic Trouble Codes (DTCs) like P0606 (ECM Processor Fault)
- Poor fuel economy and reduced engine power
- Transmission shifting issues or other electronic malfunctions
By replacing your old unit with this professionally programmed programmed 12704475 ECM, you are restoring the vehicle’s central nervous system to perfect working order.
Features & Benefits
- โ VIN-Specific Programming: We flash the module with your vehicle’s exact VIN, ensuring seamless integration with its existing electronic systems and options.
- โ Latest GM Software: Your ECM arrives with the most current factory calibrations for optimal fuel efficiency, emissions, and performance.
- โ Direct-Fit Replacement: This unit is a direct replacement for multiple part numbers, including 12704475, 12692069, 12680656, 12686383, and 12688528, guaranteeing a perfect fit.
- โ Cost-Effective Solution: Avoid the high costs and scheduling delays associated with dealership programming services.
- โ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
As a technician with over 20 years of experience, I’ve seen countless issues arise from installing a used, un-programmed computer. A module from a salvage yard might look identical, but it’s programmed for a different vehicle’s options, security system, and emissions components. This mismatch can lead to a no-start condition, incorrect engine operation, and a cascade of error codes. Our process of programming this programmed 12704475 ECM to your specific VIN isn’t just a convenienceโit’s a critical step that ensures the repair is done right the first time, saving you from future headaches and diagnostic nightmares.
Frequently Asked Questions
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, simply send us a message with your vehicle’s 17-digit VIN. We cannot program and ship your ECM without this information.
What is a “theft relearn” and will I need to do one?
For security, most modern GM vehicles require the new ECM to be synchronized with the vehicle’s anti-theft system. This is called a “theft deterrent relearn.” In many cases, this must be performed by a qualified technician with access to GM’s official software (Tis2web/Techline Connect) after the part is installed. This is the responsibility of the buyer/installer.
Will this fix my check engine light?
If the check engine light and performance issues are directly caused by a faulty ECM, this part is the solution. However, we always recommend a thorough diagnosis by a professional mechanic to confirm the ECM is the point of failure before ordering. This programmed 12704475 ECM will not fix problems caused by other faulty sensors or mechanical issues.
What other part numbers does this module replace?
This ECM is a direct, compatible replacement for part numbers 12704475, 12692069, 12680656, 12686383, and 12688528. Please check the fitment list to confirm your specific model and year.
Are any other relearn procedures required after installation?
Depending on your vehicle, additional procedures like a crankshaft position variation relearn or injector flow rate programming may be necessary. These are standard procedures after an ECM replacement and should be performed by the installer to ensure optimal performance.
Do I need to send my old computer back?
No core charge is required for this part. You do not need to return your old ECM to us.