{
“title”: “2004 Express 1500 PCM Engine Computer ECM 89017739“,
“long_description”: “
Restore Peak Performance to Your 2004 Chevrolet Express 1500
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Is your 2004 Express van running rough, stalling unexpectedly, or showing a persistent Check Engine Light? These are common signs that the heart of your vehicle’s management system, the Powertrain Control Module (PCM), may be failing. The PCM, also known as the Engine Control Module (ECM), is the central computer responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions controls. When it falters, the entire vehicle’s performance and reliability are compromised.
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This replacement PCM, part number 89017739, is the definitive solution to get your van back on the road and running like new. We take the guesswork and high dealership costs out of the equation. Each module is meticulously programmed with the latest official GM software updates, specifically tailored to your vehicle’s unique Vehicle Identification Number (VIN). This ensures seamless integration and communication with all other onboard systems, providing a true plug-and-play installation experience.
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From the Diagnostic Bay
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We had a 2004 Express 1500 work van come into the shop that was driving the owner crazy. It would randomly stall at stoplights and had a very harsh 1-2 shift. The check engine light was on with a generic ‘internal module failure’ code. After checking all the wiring and sensors, which all tested fine, we suspected the PCM. We swapped in one of our VIN-programmed modules, and the difference was immediate. The van started right up, idled smoothly, and the transmission shifted perfectly. It’s a classic case where the complex internal circuitry of the original module had simply worn out, causing unpredictable and frustrating problems that a direct replacement solved instantly.
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Diagnosing a Faulty 2004 Express 1500 PCM
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A failing PCM can manifest in various ways, often mimicking other component failures. If you’re experiencing any of the following issues, it’s a strong indication that your engine computer needs attention. Proper diagnosis is key, but these symptoms are the most common red flags for a module-related problem.
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Common Symptoms of PCM Failure
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- ✔ Check Engine Light: The light is on, and you may have codes like P0601, P0606, or other internal processor fault codes.
- ✔ Engine Stalling or Misfiring: The engine may stall for no reason, run rough, or experience random misfires.
- ✔ Poor Fuel Economy: A sudden and unexplained drop in MPG can be caused by incorrect fuel and air calculations from a faulty module.
- ✔ No-Start Condition: The engine cranks but refuses to start, often due to the PCM not firing the ignition coils or fuel injectors.
- ✔ Erratic Transmission Shifting: The PCM controls transmission solenoids, so a failure can lead to hard shifts, delayed shifting, or getting stuck in one gear.
- ✔ Communication Errors: Your diagnostic scan tool may be unable to communicate with the PCM, a definitive sign of a major internal fault.
- ✔ Failed Emissions Test: The module’s inability to properly manage the engine can lead to an automatic failure at the emissions station.
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Simple, Reliable Installation Process
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Our goal is to make this repair as straightforward as possible. After you place your order, simply provide us with your vehicle’s VIN. Our technicians will then flash the module with the correct software for your 2004 Express 1500’s specific configuration. When the part arrives, it’s ready for installation. In most cases, this involves disconnecting the battery, unplugging the electrical connectors from the old PCM, unbolting it, and installing the new one in its place. Once connected and the battery is re-engaged, your vehicle will be ready to go. No expensive dealership programming or special tools are required.
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Frequently Asked Questions
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. PCM (Powertrain Control Module) typically controls both the engine and transmission, while an ECM (Engine Control Module) may only control the engine. For this 2004 GM platform, this module serves as the PCM, managing all powertrain functions.
Do I need to have this module programmed by a dealer?
No. This module comes pre-programmed to your vehicle’s VIN. This service is included in the purchase price, allowing for a direct, plug-and-play installation without needing a trip to the dealership.
Where is the PCM located on my 2004 Express 1500?
On the 2004 Express 1500 van, the PCM is typically located in the engine compartment on the driver’s side, near the rear of the engine bay. Always disconnect the battery before attempting to remove or install the module.
Is any additional setup required after installation?
In some cases, a security relearn procedure may be necessary, which can be done without special tools. Instructions are typically included or can be easily found online. This procedure allows the PCM to recognize your vehicle’s anti-theft system and keys.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your part until we have this information to program the module correctly.
“,
“short_description”: “
Get Your Van Running Right Again!
This is a direct-fit, VIN-programmed Powertrain Control Module (PCM) for your 2004 Express 1500. It arrives ready to install, solving common issues like stalling, rough idling, and check engine lights. Order today for a simple, reliable fix!
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“meta_description”: “Fix stalling and performance issues with our pre-programmed 2004 Express 1500 PCM. VIN-matched for easy, plug-and-play installation. Order now!”,
“focus_keyword”: “2004 Express 1500 PCM”,
“image_meta”: {
“alt_text”: “2004 Express 1500 PCM Engine Control Module 89017739 with its three main electrical connection ports visible.”,
“image_title”: “2004-Express-1500-PCM-ECM-89017739“,
“caption”: “VIN-Programmed Powertrain Control Module (PCM/ECM) 89017739 for 2004 Chevrolet Express 1500.”,
“description”: “Front view of the Powertrain Control Module (PCM) compatible with part number 89017739. This unit is the central computer for the engine and transmission on a 2004 Express 1500 and many other GM vehicles.”
}
}