---
product_id: 230395276
title: "2003 Sierra Engine Computer 12582605 ECM PCM ECU Programmed to Your Vehicle VIN"
brand: "flashmasters"
price: "Bs.152"
currency: BOB
in_stock: false
reviews_count: 1
url: https://www.desertcart.bo/products/230395276-2003-sierra-engine-computer-12582605-ecm-pcm-ecu-programmed-to
store_origin: BO
region: Bolivia
---

# Instructions Included VIN Programming Plug & Play 2003 Sierra Engine Computer 12582605 ECM PCM ECU Programmed to Your Vehicle VIN

**Brand:** flashmasters
**Price:** Bs.152
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Rev Up Your Ride with Precision Performance!

## Quick Answers

- **What is this?** 2003 Sierra Engine Computer 12582605 ECM PCM ECU Programmed to Your Vehicle VIN by flashmasters
- **How much does it cost?** Bs.152 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/230395276-2003-sierra-engine-computer-12582605-ecm-pcm-ecu-programmed-to)

## Best For

- flashmasters enthusiasts

## Why This Product

- Trusted flashmasters brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Design:** Built to withstand the rigors of daily driving, ensuring long-lasting reliability.
- • **User-Friendly Setup:** Includes clear instructions for a hassle-free installation process.
- • **Seamless Integration:** Experience effortless installation with our Plug and Play design.
- • **Tailored Performance:** Each ECM is programmed specifically to your VIN for optimal vehicle performance.
- • **Comprehensive Compatibility:** Fits a wide range of 2003 GMC Sierra models, ensuring versatility.

## Overview

The 2003 GMC Sierra Engine Computer (Part Number: 12582605) is a high-performance ECM designed for seamless integration with your vehicle. Compatible with various GMC Sierra models, this unit is programmed specifically to your VIN, ensuring optimal functionality. With a user-friendly Plug and Play setup and included instructions, upgrading your engine management system has never been easier.

## Description

This Engine Control Module (ECM/PCM/ECU) is a professionally remanufactured OEM unit designed to restore proper factory operation. Programmed to your vehicle VIN before shipment. Please provide your VIN after ordering. Verify that your original part number matches before ordering. If you are unsure, send your VIN and part number through desertcart messaging and we will help review the application. Installation requirements vary by vehicle. Professional installation is recommended when applicable. Includes a 1-year limited warranty unless otherwise stated. Warranty is void if the item has been opened, altered, or tampered with after delivery. We are not responsible for labor, towing, diagnostic fees, installation costs, or other related expenses. This product is intended only to restore original factory operation and does not modify emissions or performance.

Review: Didn't fix problem - Didn't solve my issue

## Features

- VIN Required After Purchase – Message us your VIN for proper vehicle matching before shipment
- Verify Part Number Before Ordering – Exact match required; VIN can be provided for fitment assistance
- Remanufactured OEM Module – Designed to restore original vehicle system function
- Installation May Require Relearn – Anti-theft and/or crankshaft variation relearn may be required
- Expert Technical Support Available – Contact us through desertcart messaging for compatibility or installation help

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07N98JH7L |
| Best Sellers Rank | #2,953,316 in Automotive ( See Top 100 in Automotive ) #454 in Automotive Replacement Engine Computers |
| Brand | Flashmasters |
| Brand Name | Flashmasters |
| Color | Multicolor |
| Customer Reviews | 3.8 out of 5 stars 8 Reviews |
| Display Type | LCD or LED |
| Manufacturer | Flashmasters |
| Material | Plastic |
| Material Type | Plastic |
| Part Number | 12582605 |
| Text | 1 text input |
| Voltage | 14 Volts |

## Product Details

- **Color:** Multicolor
- **Brand:** Flashmasters
- **Voltage:** 14 Volts
- **Display Type:** LCD or LED
- **Manufacturer:** Flashmasters

## Images

![2003 Sierra Engine Computer 12582605 ECM PCM ECU Programmed to Your Vehicle VIN - Image 1](https://m.media-amazon.com/images/I/71q78aHPNWL.jpg)

## Customer Reviews

### ⭐⭐⭐ Didn't fix problem
*by V***E on December 17, 2022*

Didn't solve my issue

---

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**Shop now:** [https://www.desertcart.bo/products/230395276-2003-sierra-engine-computer-12582605-ecm-pcm-ecu-programmed-to](https://www.desertcart.bo/products/230395276-2003-sierra-engine-computer-12582605-ecm-pcm-ecu-programmed-to)

---

*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-05-19*