Get Your Workhorse Van Back on the Job
Is your 2004 GMC Savana 3500 suddenly unreliable, leaving you stranded or running poorly? A faulty Engine Control Module (ECM) is often the culprit behind frustrating issues that can bring your business to a halt. This direct-fit replacement 2004 Savana 3500 ECM 89017739 is the definitive solution to restore your van’s performance and get you back on the road with confidence. We take the guesswork out of the repair by pre-programming the module to your vehicle’s specific VIN with the latest GM software updates, ensuring a seamless installation process.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing ECM is the likely cause. This module is designed to correct these exact problems:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0606
- Engine stalling, sputtering, or misfiring
- Complete no-start condition
- Poor fuel economy or reduced power
- Erratic automatic transmission shifting
- Communication issues with diagnostic scan tools
Replacing your old unit with this professionally programmed module is the most effective way to solve these issues and prevent further damage to your engine or transmission.
Features & Benefits
- ✔ VIN-Programmed for Your Van: Arrives ready to install, flashed with the latest GM software for your specific 2004 Savana 3500. This eliminates the need for expensive and time-consuming dealer programming.
- ✔ Restored Engine Performance: Corrects rough idle, poor acceleration, and hesitation by restoring precise control over fuel delivery and ignition timing.
- ✔ Optimized Fuel Efficiency: By ensuring your engine operates exactly as the manufacturer intended, this module helps you get the most out of every gallon of fuel.
- ✔ Direct-Fit Replacement: Engineered to match the original factory part (interchangeable with part number 12586243), guaranteeing a perfect fit and straightforward installation.
- ✔ Peace of Mind Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
As a technician with over two decades of experience, I’ve seen countless issues arise from improperly programmed modules. Simply installing a used ECM from another vehicle will almost always result in a no-start condition due to the vehicle’s anti-theft system (PassLock/VATS). Furthermore, subtle differences in axle ratios, tire sizes, and emissions equipment can cause persistent check engine lights and poor transmission performance. By programming this 2004 Savana 3500 ECM 89017739 to your exact VIN, we ensure all vehicle-specific parameters are correctly loaded. This isn’t just about starting the engine; it’s about making sure your van drives, shifts, and performs exactly as it should, saving you from frustrating and costly follow-up repairs.
Frequently Asked Questions
Is this module truly plug-and-play?
Yes. Because we program the module to your specific VIN before shipping, it arrives ready for installation. In most cases, you will not need to perform any additional programming. However, some GM vehicles may require a simple security relearn procedure, which can be done without any special tools and typically takes about 30 minutes. We include instructions for this common procedure.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically reply to your order confirmation email or use the contact form on our website. We cannot ship your part until we receive your VIN, as the programming is essential.
How can I be sure my old ECM is the problem?
While the symptoms listed above are strong indicators, it’s always best to have a professional diagnosis. Common trouble codes for internal module failure, such as P0601 (Internal Control Module Memory Check Sum Error), are a definitive sign. If you’re unsure, have a qualified mechanic check for power and ground at the ECM connector and verify the communication network is intact before ordering.
Will this fit vehicles other than the Savana 3500?
Yes, this 2004 Savana 3500 ECM 89017739 is compatible with a very wide range of 2004 GM vehicles, including the Silverado, Sierra, Suburban, Yukon, Express, Trailblazer, and more. Please refer to the detailed compatibility list on this page to confirm it fits your specific model and engine.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty. This gives you confidence that you are receiving a quality, reliable part for your vehicle.