Get Your GM Truck or Van Back to Work, Fast.
Is your Savana, Express, or Silverado plagued by frustrating and intermittent issues? A faulty Powertrain Control Module (PCM) can manifest as a wide range of problems, from a simple check engine light to a vehicle that won’t start at all. For a work vehicle, downtime is lost income. This replacement PCM is the reliable, professional solution to restore your vehicle’s performance and get you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing engine computer is the likely culprit. This module is the definitive solution for:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0606
- Poor or erratic automatic transmission shifting
- Reduced fuel economy
- Engine stalling, stumbling, or misfiring
- No-start or hard-starting conditions
- Communication issues with diagnostic scan tools
Instead of chasing down endless sensor replacements or paying for expensive dealership diagnostics, address the root cause. Our 2005-2007 Savana 2500 PCM arrives programmed and ready for installation, saving you time and money.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the module with the latest GM-certified software using your vehicle’s VIN. This ensures perfect compatibility with your specific engine, transmission, and options.
- ✔ Simple Installation: Because it’s pre-programmed, this module eliminates the need for expensive dealer-only programming tools. It’s designed for a direct, straightforward installation process.
- ✔ Restored Performance: Corrects engine and transmission issues, restoring the smooth operation, power, and fuel efficiency you depend on.
- ✔ Broad Compatibility: A single, reliable solution for multiple original equipment part numbers, including 12589462, 12602801, and 89017749.
- ✔ Guaranteed Performance: This unit is backed by our one-year replacement warranty.
Expert Insight: The Ghost in the Machine
We once worked with a fleet manager whose 2006 Express 3500 van had a persistent, random misfire that mechanics couldn’t solve. They had replaced plugs, wires, coils, and even the fuel injectors, costing the business hundreds in parts and weeks of vehicle downtime. The problem was a failing PCM driver that would intermittently stop firing one of the ignition coils. A quick swap with a properly programmed 2005-2007 Savana 2500 PCM had the van running perfectly in under an hour, saving them from another costly and incorrect repair.
Frequently Asked Questions
Do I need to do any programming after I receive it?
This module comes pre-programmed to your VIN. However, on most GM vehicles of this era, you will need to perform a security relearn procedure (often called Passlock or VATS) and a CASE (Crankshaft Angle Sensor Error) relearn. These procedures do not require a dealer and can typically be done with a capable bi-directional scan tool or by following specific key-on/key-off sequences.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is specific to your vehicle.
Is this the correct part for my vehicle?
This PCM is compatible with a wide range of GM trucks and vans from 2004-2007. Please check the detailed fitment list on this page and ensure your original part number (e.g., 89017749, 12589462, 12602801) is listed. If you are unsure, please contact us with your VIN before ordering.
What is the difference between a PCM, ECM, and ECU?
PCM (Powertrain Control Module), ECM (Engine Control Module), and ECU (Engine Control Unit) are often used interchangeably. In most GM applications like this, the PCM controls both the engine and the transmission functions, making it the central computer for the entire powertrain.
What if my original part number isn’t listed?
The listed part numbers (12589462, 12602801, 89017749) are the most common service numbers. If your module has a different number but your vehicle matches the fitment list, this unit will likely still work as it will be programmed specifically for your VIN. Contact us to confirm compatibility.