Is Your GM Truck or SUV Experiencing Mysterious Issues?
If your 2003-2006 Cadillac Escalade, Chevy Silverado, GMC Sierra, or other compatible GM vehicle is suffering from erratic behavior, poor fuel economy, or a persistent Check Engine Light, the root cause is often a failing Powertrain Control Module (PCM). As the central computer for your engine, the PCM is responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it begins to fail, it can create a cascade of frustrating and difficult-to-diagnose problems.
Don’t let a faulty computer keep your powerful truck off the road. This direct-replacement PCM, part number 89017750, is the definitive solution to restore your vehicle’s performance, reliability, and efficiency. We take the guesswork out of the repair by pre-programming the module specifically for your vehicle using your VIN. This ensures that it arrives with the latest GM software updates, ready for a straightforward installation.
We had a 2005 Silverado 2500 come in with a complaint of intermittent stalling and a harsh 1-2 shift that no one could figure out. The transmission shop had cleared it, and there were no consistent trouble codes—just a few random communication errors. After hours of chasing wires, we decided to inspect the PCM. We noticed a tiny amount of corrosion on one of the pins from a previous battery leak. We swapped in one of our VIN-programmed modules, performed the security relearn, and the truck ran perfectly. It’s a reminder that the PCM is the true brain of the operation, and even minor internal faults can cause major headaches.
Your Solution: A Reliable Escalade PCM Replacement
Choosing the right replacement part is crucial. This module is a dependable, tested unit that meets or exceeds original equipment specifications. The critical advantage we offer is our professional programming service. Before we ship the part, our technicians will use your vehicle’s VIN to flash the module with the correct factory calibration and the most current software available from General Motors. This process is essential for proper function and addresses many drivability issues that may have been fixed by software revisions over the years. This is not a generic, one-size-fits-all part; it is prepared specifically for your truck.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light is on with various, often inconsistent, trouble codes.
- ✔ Engine cranks but refuses to start.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass state emissions testing.
This module is a direct fit for a wide range of GM trucks and SUVs, including the Cadillac Escalade, Chevy Avalanche, Silverado, Suburban, Tahoe, GMC Sierra, Yukon, Hummer H2, and more. It is a compatible replacement for service numbers 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802. Please verify the part number on your original module or consult our detailed fitment list to ensure compatibility.
Frequently Asked Questions
Do I need to do any programming after I receive this PCM?
No. We program the PCM with the latest GM software using your vehicle’s VIN before it ships. However, you will need to perform a security relearn procedure (often called a CASE relearn or Passlock relearn) after installation, which can typically be done without special tools. Instructions are readily available online for your specific model.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information, as the programming is essential.
Is this a plug-and-play part?
Essentially, yes. Once you perform the required security relearn procedure, the module is ready to go. The physical installation involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module to swap in the new one.
Will this fix my specific problem?
A failing PCM can cause a wide variety of symptoms. While this part will resolve issues caused by a faulty module, it’s crucial to ensure your vehicle has been properly diagnosed. This part will not fix problems related to other failed sensors, wiring, or mechanical components.
What does this part fit besides the 2003-2006 Escalade?
This PCM fits a massive range of GM trucks and SUVs from roughly 2003 to 2007, including the Silverado, Sierra, Tahoe, Yukon, Suburban, Hummer H2, and more. Please refer to the detailed compatibility list on this page to confirm it fits your exact year, make, and model.