Are you tired of dealing with a malfunctioning engine control module (ECM) in your 2003-2006 Avalanche 1500? Look no further! This pre-programmed 12589463 ECM is specifically designed to restore your vehicle’s original performance and reliability. With its OEM-equivalent build, you can trust that it will provide long-lasting results without any modifications or upgrades.
- Restores original ECM function for smooth engine operation.
- OEM-equivalent build ensures long-lasting reliability.
- Pre-programmed to your VIN – no dealership visits needed.
- Includes 1-year warranty for peace of mind.
- Easy DIY install with basic tools (tips: disconnect battery first to avoid shorts).
- Outperforms worn OEM without modifications.
- Compatible with Avalanche 1500 variants (expand from data, e.g., engine sizes like 5.3L).
No more sluggish acceleration on highways or rough idling in your driveway. This ECM is programmed to match your vehicle’s specific needs, ensuring optimal performance and efficiency. Unlike failing factory modules that trigger codes, this replacement restores your Avalanche 1500’s original functionality.
When installing, be sure to pair it with a diagnostic tool for optimal results – here’s how: use a code reader to diagnose any issues before swapping the ECM. This ensures a seamless transition and helps prevent any potential problems down the road.
Important Installation Notes
After purchasing, please provide your VIN so we can program the ECM before shipping. Relearn procedures may be required for certain features like theft relearn using GM systems like Tis2web/Techline Connect. It is the buyer’s responsibility to ensure proper setup and relearns, such as injector/crankshaft variation relearn, are completed.
This ensures security features align perfectly and your Avalanche 1500 runs smoothly. For more information on relearn procedures, please consult your owner’s manual or contact a professional mechanic.
This part will fit these makes and models with these options
2003-2006 Avalanche 1500 (engine sizes like 5.3L) – check compatibility before ordering.