Is Your Truck Running Rough? Restore Its Performance and Reliability.
If your 2003-2007 Silverado, Sierra, or other compatible GM truck is suffering from mysterious issues like a persistent check engine light, erratic shifting, poor fuel economy, or even a no-start condition, the problem often points to a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, a faulty PCM can cause a wide range of frustrating and difficult-to-diagnose problems. This replacement PCM, part number 89017750, is the definitive solution to restore your vehicle’s factory performance and get you back on the road with confidence.
Your Direct-Fit 2003-2007 Silverado PCM Solution
Don’t settle for a generic, one-size-fits-all module. We take the guesswork out of the repair by programming this module specifically for your vehicle using your VIN. This ensures that all factory settings, transmission shift points, and engine parameters are perfectly matched to your truck’s original specifications. We install the latest GM-authorized software updates, which can resolve common drivability issues and improve overall efficiency. This is a direct-fit replacement, designed to plug into your factory wiring harness without any modifications.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light is on with various, often unrelated, trouble codes.
- ✔ Your engine cranks but refuses to start.
- ✔ Noticeable decrease in fuel mileage.
- ✔ The transmission shifts harshly, late, or not at all.
- ✔ Stalling, stumbling, or rough idling for no apparent reason.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass state emissions testing.
Replacing your faulty computer with this professionally programmed 2003-2007 Silverado PCM is the most effective way to solve these complex electronic issues. This unit is a direct replacement for service numbers 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802. Please verify the extensive fitment list to confirm compatibility with your specific vehicle, which includes a wide range of Cadillac, GMC, Chevrolet, Hummer, and Isuzu models.
Important Note: Upon installation, your vehicle may require a security relearn procedure (such as Passlock or Passkey) to sync the new PCM with your vehicle’s anti-theft system. This is a standard procedure that can typically be performed by the owner in under 30 minutes without special tools.
Frequently Asked Questions
Do I need to get this PCM programmed?
No. This PCM comes pre-programmed to your vehicle’s specific VIN. After you place your order, you must provide us with your VIN so we can flash the module with the correct software and latest updates from GM before shipping.
What is a VIN and why do you need it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your specific truck. It contains information about the engine, transmission, axles, and other factory-installed options. Providing the VIN allows us to load the exact software your vehicle needs to run correctly.
Is this a simple plug-and-play installation?
Yes, the physical installation is plug-and-play. However, after installation, you will likely need to perform a security relearn procedure. This process syncs the new PCM to your vehicle’s anti-theft system and is required for the engine to start. Instructions for this procedure are widely available online or in service manuals.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this part will resolve the issue. However, it’s crucial to properly diagnose the vehicle first, as the light could be on for other reasons, such as a bad sensor or wiring issue.
Where is the PCM located on my truck?
On most compatible models like the Silverado, Sierra, Tahoe, and Suburban, the PCM is located in the engine bay, on the driver’s side, under or next to the battery tray.