**2003 TRAILBLAZER EXT PCM 12589463 – VIN-Programmed for Smooth Engine Performance**
This listing is for a PCM that has been programmed to match your vehicle’s specifications using its unique VIN. Once you purchase the PCM, please provide us with your VIN so we can program it before shipping.
**Description:**
Our PCM is designed to improve engine performance and reliability in your 2003 Trailblazer EXT. With advanced technology and precise programming, this module ensures optimal fuel efficiency, smoother acceleration, and reduced emissions. The PCM is programmed to match the original equipment manufacturer’s (OEM) specifications, ensuring seamless integration with your vehicle’s systems.
**Compatibility:**
This PCM is compatible with the following vehicles:
* 2003 Trailblazer EXT
* Additional compatibility can be confirmed by providing the VIN
**Key Features:**
* Programmed to match OEM specifications
* Improves engine performance and reliability
* Enhances fuel efficiency and reduces emissions
* Smooth acceleration and responsive throttle control
**Installation:**
To install this PCM, simply replace the existing module with the new one. Please consult your owner’s manual or contact a professional mechanic if you need assistance.
**Warranty:**
Our PCM comes with a 1-year warranty, covering any defects in materials or workmanship.
**Return Policy:**
If you’re not satisfied with the performance of this PCM, please return it within 30 days for a full refund.