Restore Your Vehicle’s Performance and Reliability
Are you battling persistent check engine lights, erratic engine performance, or a no-start condition in your GM vehicle? A failing Engine Control Module (ECM) is often the culprit, acting as the brain of your engine. This genuine GM module, part number 12704475, is the definitive solution to get your truck, van, or car running like new. We take the guesswork out of the repair by professionally programming the module to your vehicle’s specific VIN before it ever leaves our facility, ensuring a seamless integration process.
Common Symptoms & Your Solution
If your vehicle is experiencing any of the following issues, a faulty ECM is a likely cause. This pre-programmed module is designed to resolve these problems directly:
- Unexplained Check Engine Light (CEL) with communication codes (U-codes)
- Engine stalling, sputtering, or misfiring
- Poor fuel economy and reduced power
- Harsh or incorrect transmission shifting
- Complete no-start or intermittent starting problems
- Issues with other modules communicating on the network
By installing our Programmed 12704475 Engine Control Module, you are not just replacing a part; you are restoring the core logic that makes your vehicle run efficiently and reliably.
Features & Benefits
- โ VIN-Matched Programming: We flash the module with your vehicle’s VIN and the latest GM software updates. This ensures perfect compatibility and optimal performance, eliminating conflicts that cause drivability issues.
- 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 of a dealership visit. We provide a dealer-level service by pre-programming the unit, saving you time and money.
- โ Restores Peak Operation: A correctly functioning ECM is critical for everything from fuel injection timing to ignition control. This module restores that precision for a smoother, more powerful ride.
- โ Backed by Our One-Year Replacement Warranty: Drive with confidence knowing your purchase is protected.
An Expert’s Note on Installation
As a technician with over two decades of experience, I’ve seen countless vehicle owners get stuck with modules from salvage yards that don’t work because they aren’t programmed. The most critical step is the VIN programming, which we handle for you. However, please be aware that modern GM vehicles have a sophisticated anti-theft system. Upon installation, a ‘theft relearn’ procedure is often required to sync the new ECM with your keys and other modules. This is a standard security step that a qualified technician with GM-compatible tools (like Tis2web/Techline Connect) can perform. Addressing this final step is key to a successful repair, and this Programmed 12704475 Engine Control Module is the perfect starting point.
Frequently Asked Questions
What is the theft relearn procedure?
The vehicle theft deterrent (VTD) relearn is a security procedure that syncs the new ECM to your vehicle’s ignition keys and Body Control Module (BCM). If the vehicle doesn’t start after installation, this procedure is required. It must be done with a professional GM-compatible scan tool and software access, and it is the responsibility of the installer.
Is this part truly plug-and-play?
Because we program it to your VIN, it’s as close as it gets. However, due to the security systems on these vehicles, you must be prepared for the possibility of performing the VTD relearn and any other specific setups like a crankshaft variation relearn. We handle the core programming; the final vehicle-side syncing is done during installation.
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive this information, as it’s essential for the programming process.
Will this fix my specific problem?
This Programmed 12704475 Engine Control Module is the correct part to fix issues originating from a faulty computer. However, proper vehicle diagnostics are essential. Please ensure the ECM has been identified as the point of failure before ordering to ensure a successful repair.
Do I need to send my old ECM back?
No core charge or return is required for this part. You can keep or dispose of your old module as you see fit.