2004 Astro PCM Engine Control Module 89017739 Programmed

Restore Peak Performance to Your GM Vehicle

Is your 2004 Chevrolet Astro, GMC Safari, or another compatible GM vehicle suffering from frustrating issues like a persistent check engine light, poor fuel economy, stalling, or a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your engine’s most critical functions. This replacement PCM, corresponding to part numbers 89017739 and 12586243, is the definitive solution to get your vehicle running reliably again.

The Brain of Your Engine: Understanding the PCM’s Role

The PCM is the unsung hero of your vehicle’s powertrain. It constantly analyzes data from sensors throughout the engine and transmission to make real-time adjustments to the fuel mixture, ignition timing, transmission shift points, and emissions controls. When it fails, this intricate balance is lost, leading to a cascade of performance problems. A faulty module can leave you stranded and facing a confusing diagnosis. Replacing it with a properly functioning unit is essential for restoring your vehicle’s efficiency, power, and dependability.

Symptoms of a Failing 2004 Astro PCM

A failing engine computer can manifest in various ways, often mimicking other component failures. If you’re experiencing any of the following, your PCM could be the culprit:

• ✔ Illuminated Check Engine Light (CEL) with various diagnostic trouble codes (DTCs).
• ✔ Engine stalling, stumbling, or misfiring, especially under load.
• ✔ Noticeable decrease in fuel efficiency.
• ✔ Harsh or erratic automatic transmission shifting.
• ✔ Complete no-start or intermittent starting issues.
• ✔ Failure to communicate with a diagnostic scan tool.
• ✔ Apparent loss of engine power and sluggish acceleration.

The Importance of VIN-Specific Programming

This isn’t just a generic part off the shelf. To ensure perfect compatibility and function, we program this PCM specifically for your vehicle using the VIN you provide. This process loads the latest GM-certified software and calibrations that match your vehicle’s exact configuration, including its engine, transmission, and emissions equipment. This critical step eliminates the need for expensive and time-consuming programming at a dealership, making for a straightforward, plug-and-play installation.

This module is a direct-fit replacement for a wide array of 2004 GM trucks, vans, and SUVs, including the Chevy Avalanche 2500, Express Van, Silverado, Suburban, SSR, Trailblazer; GMC Sierra, Savana, Yukon; Buick Rainier; and even the Pontiac GTO and Cadillac CTS-V. By providing your VIN, you guarantee that the module you receive is perfectly tailored to your specific model and options.