Restore Your Vehicle’s Brain, Restore Your Drive
Is your Buick Rendezvous or GM vehicle suffering from frustrating, intermittent issues like stalling, erratic shifting, or a persistent check engine light? A failing Powertrain Control Module (PCM) is often the culprit, leaving you stranded and stressed. This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine OEM module and flash it with the very latest GM-approved software, specifically matched to your vehicle’s unique VIN. This process breathes new life into your car, often correcting issues the original programming never addressed and ensuring your vehicle runs as smoothly and efficiently as possible. Get back the reliable performance you depend on with this precision-programmed 2003-2005 Buick Rendezvous Programmed PCM 89017735.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following, a faulty PCM is the likely cause. This module is the definitive fix for:
- Unexplained Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0606
- Poor or harsh transmission shifting
- Engine stalling, stumbling, or misfiring
- Failure to start or intermittent starting problems
- Noticeable decrease in fuel economy
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Vehicle: This module arrives at your door ready to install. No expensive trips to the dealership for programming are required.
- ✔ Loaded with Latest GM Updates: We flash the unit with the most current software, which can improve performance, fuel efficiency, and fix factory bugs.
- ✔ True Plug-and-Play Installation: Once you perform the simple security relearn procedure (instructions included), your vehicle is ready to go.
- ✔ Restored Drivability: Enjoy a smoother idle, responsive acceleration, and crisp, predictable transmission shifts once again.
- ✔ Cost-Effective Solution: Avoid the high costs and scheduling hassles of a dealership service department with a solution you or your mechanic can install.
- ✔ This unit is backed by our one-year replacement warranty.
From the Shop Floor: Why VIN Programming is Non-Negotiable
As a technician with over 20 years of experience, I can’t stress this enough: a PCM for these GM vehicles is not a one-size-fits-all part. Your vehicle’s 17-digit VIN is like its DNA. It tells the PCM everything from the engine and transmission specifics to the type of anti-theft system (VATS/Passlock) it uses and its specific emissions package. Installing a non-programmed or incorrectly programmed module will, at best, not work and, at worst, create a cascade of new electronic issues. By programming this 2003-2005 Buick Rendezvous Programmed PCM 89017735 to your exact VIN before it ships, we eliminate all guesswork and ensure the module communicates perfectly with every other system in your car, just as the factory intended.
Frequently Asked Questions
Do I need to do any programming myself?
No. This module arrives fully programmed to the VIN you provide. The only step required after installation is a simple security relearn procedure, which can be done without any special tools and typically takes about 10-15 minutes.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We will contact you with clear instructions on how to provide it. We cannot ship your part until we have this information.
Is this a brand new part?
This is a high-quality, fully tested OEM replacement component that has been meticulously inspected and programmed to meet or exceed original factory specifications, ensuring reliable performance.
What if my original part number is slightly different?
This module, part number 89017735, is the correct service replacement for several original part numbers, including 12583827 and 12583826. Please check the detailed fitment list on this page to confirm compatibility with your vehicle.
Will this fix my check engine light?
If your check engine light is on due to an internal module failure (indicated by codes like P0601 or P0606), this part is the correct solution. However, it’s always essential to have your vehicle properly diagnosed to ensure the PCM is the root cause of the problem.
What is the security relearn procedure?
For most compatible GM vehicles, the procedure involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. This allows your vehicle’s anti-theft system to recognize the new PCM. We will include specific instructions for your convenience.