Restore Your Buick’s Peak Performance and Reliability
Are you tired of that persistent Check Engine Light? Experiencing frustrating issues like rough idling, unpredictable stalling, or poor fuel economy in your Buick or GM vehicle? A failing Powertrain Control Module (PCM) is often the culprit, disrupting the harmony between your engine and transmission. This replacement PCM is the definitive solution to get your car running smoothly and reliably again, restoring the quiet, dependable ride you’ve come to expect.
Common Symptoms & Your Solution
If your vehicle is exhibiting any of the following symptoms, a faulty engine computer may be to blame. This pre-programmed module is designed to resolve these exact problems:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) such as P0601, P0602, P0605, or P0606
- Unexplained drop in fuel efficiency
- Engine stalling, stumbling, or hesitating during acceleration
- Harsh or erratic automatic transmission shifting
- Failure to pass emissions testing
- Complete no-start condition
This isn’t just a part; it’s a comprehensive solution. We program this 2003-2004 Buick Park Avenue PCM 89017735 specifically to your car’s unique Vehicle Identification Number (VIN), ensuring it works seamlessly with your existing systems right out of the box.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: No need for expensive trips to the dealership. This unit arrives pre-flashed with the latest GM software updates for your specific car, ensuring perfect compatibility.
- ✔ Restores Original Performance: Eliminates engine and transmission issues caused by a faulty original module, bringing back the smooth operation and efficiency you’ve been missing.
- ✔ Direct-Fit Replacement: Engineered to be a direct replacement for service numbers 89017735 and 12583826, guaranteeing a straightforward installation process.
- ✔ A Cost-Effective Solution: Get your vehicle back on the road without the high cost and hassle of sourcing and programming a module from a dealer.
- ✔ Backed by Our Guarantee: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Drivability Issues
“Over my 20 years in diagnostics, I’ve seen countless owners spend hundreds, sometimes thousands, of dollars chasing what they believe is a transmission problem. They’ll replace solenoids and sensors, only to have the harsh shifting and hesitation persist. More often than not, the root cause is a failing PCM that’s sending incorrect signals. Before you consider a costly transmission repair, make sure your vehicle’s ‘brain’ is functioning correctly. Installing a properly programmed 2003-2004 Buick Park Avenue PCM 89017735 often resolves these ‘ghost’ transmission issues instantly, saving you time, money, and immense frustration.”
Frequently Asked Questions
Do I need to program this module?
No. This module comes fully programmed to your vehicle’s VIN before it is shipped. It is ready for installation upon arrival.
How do I provide my vehicle’s VIN?
After you complete your purchase, we will contact you to request your VIN. We cannot ship your part until we have this information to program the module correctly.
Will I need to perform any other procedures after installation?
In most cases, you will need to perform a simple security relearn procedure, also known as a CASE relearn. This can typically be done without special tools and involves a sequence of key turns. Instructions are widely available online for your specific model.
Is this a direct replacement for my original part?
Yes, this is a direct replacement for units with service numbers 89017735 or 12583826. Please verify the number on your original module to ensure compatibility.
What if my original part number is different?
If your service number is not listed, please contact us before ordering. We can help you verify compatibility or find the correct part for your vehicle to ensure a successful repair.
What does the one-year replacement warranty cover?
The warranty covers any functional defects with the module itself. If the unit fails within one year of the purchase date, we will provide a replacement. This provides peace of mind for your repair.