Get Your Savana Back to Work with a Reliable, Programmed PCM
Is your 2003 Savana 1500 acting up? Unexplained stalling, harsh shifting, or a persistent check engine light can bring your work to a grinding halt. As the central computer of your van, a failing Powertrain Control Module (PCM) is often the culprit behind these frustrating and difficult-to-diagnose issues. This isn’t just an inconvenience; it’s costing you time and money. This replacement PCM, part number 12570558, is the direct-fit, reliable solution to restore your vehicle’s performance and get you back on the road.
Expert Pro Tip: Inspect Before You Connect
Before plugging in your new PCM, take 60 seconds to thoroughly inspect the vehicle’s harness connectors. Over the years, I’ve seen countless new modules damaged instantly by corroded or bent pins in the harness. Use a small pick and a flashlight to ensure every pin is straight and clean. A quick spray of electronics-safe contact cleaner can prevent a world of headaches and protect your investment.
Common Symptoms of a Failing PCM:
If you’re experiencing any of the following, a faulty PCM is a likely cause. I’ve diagnosed hundreds of these in my shop, and the symptoms are often confusingly broad.
- โ Unexplained Check Engine Light with various, often unrelated, trouble codes.
- โ Engine stalling or cutting out randomly, especially when warm.
- โ Harsh, erratic, or delayed automatic transmission shifting.
- โ A complete no-start condition where the engine cranks but won’t fire.
- โ Poor fuel economy and a noticeable loss of power.
- โ Communication errors when trying to connect a professional scan tool.
The Simple Solution: Programmed and Ready to Install
The biggest hurdle in replacing a modern vehicle computer is the expensive and time-consuming programming required at a dealership. We eliminate that step completely. When you order, simply provide us with your vehicle’s VIN. We will flash this module with the latest, most stable GM software specific to your 2003 Savana 1500 PCM configuration. It arrives at your door ready for a straightforward installation, saving you hundreds of dollars and days of downtime.
Plug-and-Play Installation: No Dealer Visit Required
For a 2003 Savana or Express van, the PCM is located in the left-hand (driver’s side) rear of the engine compartment. The process is simple:
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: Find the module mounted in the rear driver’s side of the engine bay.
- Disconnect Connectors: Carefully unlatch and remove the electrical harness connectors from the old module.
- Swap the Module: Unbolt the old PCM and secure the new one in its place.
- Reconnect Everything: Firmly plug the harness connectors into your new PCM until they click into place. Reconnect the negative battery terminal.
- Final Step: In some cases, a security relearn procedure may be necessary, which can typically be done without special tools. Instructions are readily available online for your specific model.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM vehicles and is compatible with numerous service numbers. Please verify your part number or contact us for assistance.
Replaces Service Numbers: 12581565, 8125815650, 12570557, 12570558, 12576106, 12576869, 12578127, 88864822, 89017733, and more.
Fits a Wide Range of 2003-2004 GM Models Including:
- Chevrolet Express & GMC Savana Vans (1500, 2500, 3500)
- Chevrolet Silverado & GMC Sierra Pickups (1500, 2500, 3500)
- Chevrolet Suburban, Avalanche & GMC Yukon XL 2500
- Chevrolet S10, Blazer & GMC Sonoma, Jimmy
- Chevrolet Astro & GMC Safari Vans
- 2004 Cadillac CTS & Chevrolet Corvette (verify ID 12581565)