Restore Your Vehicle’s Brain and Get Back on the Road with Confidence
Is your Grand Prix, Bonneville, or Impala suddenly running rough, stalling, or showing a persistent Check Engine Light? These are classic signs that the heart of your engine management system, the Powertrain Control Module (PCM), may be failing. I’ve spent two decades in the garage, and I can tell you that a faulty PCM can cause a cascade of frustrating, hard-to-diagnose issues. This isn’t just a part; it’s the central command for your engine’s performance, fuel economy, and emissions. This listing offers a straightforward, reliable solution: a tested, used OEM PCM, part number 09361735, that arrives at your door programmed specifically for your vehicle.
We take the guesswork and dealer-level expense out of the equation. Simply provide your vehicle’s VIN after purchase, and our technicians will flash this module with the latest official GM software updates for your exact car. This ensures seamless communication between the engine, transmission, and other onboard systems, restoring the smooth operation you expect. Don’t let a bad computer keep your car sidelined. This is the most direct path to fixing those nagging electronic gremlins.
Case Study: A Tricky Diagnosis
A customer brought in a 2000 Impala 3.8L with intermittent stalling and erratic shifting. They had already replaced the MAF sensor and spark plugs with no luck. The scanner showed a generic P0601 ‘Internal Control Module Memory Check Sum Error’ code, which points directly to the PCM. Instead of sending them to a dealership for a costly new unit and programming, we sourced a quality used PCM like this one. We flashed it with the car’s VIN, installed it, and performed the security relearn procedure. The car immediately ran perfectly. The VIN-specific programming was the key—it ensured the PCM knew it was in the right car, with the right options, preventing any anti-theft or communication errors. This is the exact service we provide with this part.
Is Your Car Showing These Symptoms?
A failing PCM can manifest in many ways. If you’re experiencing any of the following, this module is a likely solution:
- âś” Persistent Check Engine Light (CEL)
- âś” Diagnostic Trouble Codes (DTCs) like P0601, P0602, or other communication errors
- âś” Engine stalling, stuttering, or refusing to start
- âś” Harsh or erratic automatic transmission shifting
- âś” A noticeable drop in fuel economy
- âś” Failure to pass an emissions or smog test
- âś” No communication with your OBD-II scan tool
A Straightforward Guide to Your 1999-2000 Grand Prix PCM Installation
Replacing your PCM is a job most DIYers can handle in under an hour with basic hand tools. Our pre-programming service makes it even simpler. Follow these general steps for a successful installation.
- Safety First: Always disconnect the negative terminal from your car’s battery and secure it away from the post to prevent any accidental electrical contact.
- Locate the PCM: On most of these vehicles, the PCM is located in the air filter box housing in the left-hand (driver’s side) of the engine compartment. Some models may vary (e.g., inside the dash). Consult a repair manual for your specific vehicle if unsure.
- Disconnect Connectors: Carefully unclip and remove the electrical harness connectors from the old PCM. These connectors have locking tabs that need to be released before pulling. Avoid forcing them.
- Remove the Old Module: Unbolt the PCM from its mounting bracket or housing. It’s typically held in by a few small bolts or clips.
- Install the New PCM: Place your new, pre-programmed PCM into the mounting bracket and secure it. Reconnect the electrical harnesses, ensuring they click firmly into place.
- Reconnect Battery: Re-attach the negative battery terminal.
- Perform Security Relearn: You will need to perform a simple key-on/key-off security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. This allows the vehicle’s anti-theft system to recognize the new PCM. Your car should then start and run correctly.
Verified Vehicle Compatibility
This module, part number 9361735, is a direct-fit replacement for a wide array of General Motors vehicles. Please verify your part number and application from the list below. Providing your VIN is mandatory to ensure we program the correct software for your car’s specific options.
Chevrolet: Impala (00 – 3.4L & 3.8L), Lumina Car (99), Malibu (99 – 3.1L), Monte Carlo (99-00), Venture (99)
Oldsmobile: Cutlass (99), Eighty Eight (99), Intrigue (99), Silhouette (99)
Pontiac: Bonneville (99-00), Grand Prix (99-00), Montana (99), Trans Sport (99 – Canada)
Note: For 2000 Grand Prix, fits 3.8L with supercharged option (opt K29). For 2000 Bonneville, fits 3.8L (VIN K). Please check your vehicle’s specifications.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential. It allows us to access the specific GM software calibration file for your car’s engine, transmission, and factory options. Programming with your VIN ensures the PCM works perfectly upon installation, just like a part from the dealership, but without the high cost and hassle.
Is this a new part?
No, this is a high-quality, tested used OEM (Original Equipment Manufacturer) part recovered from a salvaged vehicle. Each unit is inspected and verified to be fully functional before being programmed and shipped. This provides OEM reliability at a fraction of the cost of a new module.
Will I need to do anything else after installation?
After installing the PCM and reconnecting the battery, you will need to perform a standard GM security relearn procedure. This is a simple process that syncs the new module to your car’s anti-theft system and can be done at home without special tools. Instructions are widely available online or in service manuals.
What if my part number is slightly different?
For GM electronics, it is critical to match the part number exactly. This module, 9361735, replaces the identical service number. If your original module has a different number, please contact us or check our other listings to ensure you get the correct part for your vehicle.
What kind of guarantee comes with this part?
We stand behind our parts. This PCM comes with a 90-day warranty that guarantees it will be programmable and functional. We ensure you receive a working, correctly programmed module ready to solve your vehicle’s issues.