Restore Your Buick’s Smooth, Dependable Performance
Is your 2004-2005 Buick Park Avenue suffering from frustrating and unpredictable issues like stalling, a persistent check engine light, rough idling, or poor fuel economy? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your vehicle’s engine and transmission. Driving with a faulty PCM can be stressful, leaving you without the confidence you need in your vehicle. This replacement module is the definitive solution to restore the quiet, reliable, and smooth ride you’ve come to expect from your Buick.
Common Symptoms & Your Solution
A failing engine computer can manifest in numerous ways, often starting as intermittent problems that become more frequent over time. If you’re experiencing any of the following, it’s a strong indication that your PCM needs attention:
- Erratic engine performance, including surging or hesitation
- Unexplained stalling or difficulty starting
- Harsh or delayed transmission shifting
- A steady or flashing Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) related to the processor, such as P0601, P0602, P0604, or P0606
- Noticeable decrease in fuel efficiency
Our pre-programmed 2004-2005 Buick Park Avenue PCM 89017735 is the direct answer to these problems. We take all the guesswork out of the repair by flashing the unit with the latest official GM software updates, specifically matched to your car’s unique Vehicle Identification Number (VIN). This ensures perfect communication between all vehicle systems, just like the original, for a straightforward, effective repair.
Features & Tangible Benefits
- ✔ Programmed to Your VIN: We flash the module specifically for your vehicle before it ships. This means no expensive trips to the dealer for programming—it arrives ready for a true plug-and-play installation.
- ✔ Loaded with Latest GM Updates: Your new PCM comes with the most current software, which often includes improvements to fuel economy, shifting logic, and overall engine performance that your old unit lacks.
- ✔ Direct-Fit Replacement: Engineered to be a perfect match for part numbers 89017735, 12583827, and 12583826, guaranteeing proper fit and connection in your Park Avenue and other compatible GM vehicles.
- ✔ Restores Vehicle Reliability: By solving the root cause of erratic electronic issues, this module restores your confidence in your vehicle, making every drive predictable and worry-free.
- ✔ Cost-Effective Solution: Get the quality and function of a dealer part without the excessive cost. This is the smart, practical choice for getting your car back in top condition.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: The Path to a Smooth Ride
We recently worked with a Park Avenue owner who was about to give up on his car. It had developed an intermittent stalling issue that no one could pinpoint—it would die at stoplights without warning, yet restart moments later. The check engine light was inconsistent. He was frustrated and had lost trust in his otherwise immaculate vehicle. After confirming his symptoms pointed to the PCM, we sent him a module programmed to his VIN. The installation was simple, and the problem vanished instantly. He called back a week later just to say he was enjoying his car again, noting the transmission even felt smoother than before. That’s the difference a correctly functioning and properly programmed 2004-2005 Buick Park Avenue PCM 89017735 can make—it’s not just a part, it’s peace of mind.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) contains critical information about your car’s specific options, engine, transmission, and emissions equipment. We use the VIN to load the exact GM-certified software for your vehicle, ensuring the 2004-2005 Buick Park Avenue PCM 89017735 works perfectly right out of the box.
Is any additional programming required after installation?
No. Our service ensures the module arrives fully programmed and ready for installation. In most cases, you will not need to perform any additional programming. However, some vehicles may require a simple security relearn procedure, which can typically be done without special tools and instructions can be easily found online.
Will this fix my check engine light?
If the check engine light is on due to a fault within the original PCM (like internal processor errors), this replacement unit will resolve the issue. It’s always recommended to clear all codes after installation to verify the repair was successful.
Is this part difficult to install?
The PCM is typically located in the engine compartment, under the hood. Installation involves disconnecting the battery, unplugging the electrical connectors from the old module, unbolting it, and then installing the new one in reverse order. It’s a task a confident DIYer or any professional mechanic can complete with basic hand tools.
How does the one-year replacement warranty work?
If the module fails within one year of the purchase date, we will provide a replacement unit. This coverage protects you against defects in the part, giving you confidence in your purchase.
