Get Your Truck Back to Work with a Reliable, Ready-to-Install Engine Computer
Is your Chevrolet Express, Silverado, or GMC Savana suffering from frustrating engine problems? A faulty Powertrain Control Module (PCM) can bring your work to a halt, causing everything from a no-start condition to poor fuel economy and a persistent Check Engine Light. This isn’t just an inconvenience—it’s downtime that costs you time and money. Get back on the road with confidence with this direct-fit, VIN-programmed PCM, engineered to restore your vehicle’s original performance and dependability.
Common Symptoms of a Failing PCM & Your Direct Solution
If you’re experiencing any of the following issues, a failing engine computer is the likely culprit. This unit is the definitive solution for resolving them:
- Check Engine Light (CEL): Illumination for codes like P0601, P0602, P0605, or P0606.
- No-Start or Hard Starting: The engine cranks but refuses to start, or starts only after extended cranking.
- Poor Performance: Noticeable loss of power, hesitation during acceleration, and rough idling.
- Reduced Fuel Economy: A sudden and unexplained drop in your vehicle’s MPG.
- Transmission Issues: Harsh shifting, incorrect gear selection, or getting stuck in one gear.
- Communication Errors: Your diagnostic scan tool is unable to communicate with the PCM.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN, eliminating the need for expensive dealership programming.
- ✔ Latest GM Software: We flash your PCM with the newest updates from General Motors, ensuring optimal engine performance, transmission shifting, and fuel efficiency.
- ✔ Guaranteed Compatibility: By using your VIN, we ensure a perfect match for your vehicle’s specific options and systems. This unit is a direct replacement for part numbers 12589462, 12602801, and 89017749.
- ✔ Cost-Effective Solution: Avoid the high costs and scheduling hassles of a dealership visit. This is a straightforward fix for mechanics and experienced DIYers alike.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
As a technician, I’ve seen countless vehicle issues caused by improperly matched control modules. On these GM trucks and vans, the PCM is the brain of the entire operation. It doesn’t just manage the engine; it communicates with the transmission controller, the anti-lock brake system, and even the security system (Passlock/Passkey). Programming this module to your exact VIN isn’t just a suggestion—it’s critical. It ensures the anti-theft system recognizes your key, the transmission shifts at the right points for your vehicle’s specific gear ratio, and all emissions components function correctly. A generic, non-programmed module will, at best, run poorly and, at worst, leave your vehicle completely immobilized. This programmed 89017749 PCM takes all the guesswork out of the repair, giving you a part that works correctly the first time.
Frequently Asked Questions
How does the programming process work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). Our technicians use this VIN to flash the module with the correct, most up-to-date GM factory software for your specific make, model, and engine configuration before we ship it.
Will I need to do anything after installation?
In many cases, you may need to perform a simple security relearn procedure after installation, which can typically be done without special tools. This procedure allows the vehicle’s anti-theft system to synchronize with the new PCM. We can provide instructions for this common procedure.
Is this compatible with my vehicle?
This module fits a wide range of 2005-2007 GM trucks, vans, and SUVs. Please refer to the detailed fitment list on this page to confirm it matches your specific year, make, and model. Providing your VIN ensures we send you the correctly programmed 89017749 PCM for your application.
What is the difference between a PCM, ECM, and ECU?
The terms are often used interchangeably. PCM (Powertrain Control Module) typically controls both the engine and transmission. ECM (Engine Control Module) controls only the engine. ECU (Electronic Control Unit) is a more generic term for any electronic module. For these vehicles, this part is correctly identified as the PCM.
Where do I find my VIN?
Your VIN can be found on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
What does the one-year replacement warranty cover?
This unit is backed by our one-year replacement warranty. This covers any defects in the module itself. If the unit fails within one year of the purchase date, we will provide a replacement part.