Restore Your Buick’s Performance and Reliability
Is your 2001-2002 Buick Century experiencing frustrating issues like stalling, erratic shifting, a persistent Check Engine Light, or even a no-start condition? These are classic signs that the brain of your vehicle, the Powertrain Control Module (PCM), is failing. As a technician with over two decades of experience under the hood, I’ve seen how a faulty PCM can turn a reliable car into a constant headache. Don’t let a bad module keep you off the road or force you into an expensive dealership visit. This replacement PCM is the direct, effective solution you need.
This isn’t just a part in a box. It’s a complete solution, delivered to your door ready for installation. We take your vehicle’s unique Vehicle Identification Number (VIN) and flash this module with the latest, most stable software updates directly from GM. This critical step ensures that the module communicates perfectly with your engine, transmission, and all other systems, restoring the original performance and fuel efficiency your car was designed for. By handling the programming beforehand, we eliminate the need for specialized scan tools or a costly trip to the service center. This is the most straightforward way to get your Century running right again.
A Technician’s Notebook: The Phantom Misfire
I once had a 2002 Grand Prix in my bay with a persistent misfire code that the owner had spent hundreds trying to fix. He’d replaced plugs, wires, and even the ignition coil pack, but the misfire always returned. After confirming the ignition components were good, my diagnostic process led me to the PCM. The internal driver circuit for that specific cylinder was failing intermittently under heat. We swapped in a pre-programmed PCM just like this one, and the problem was solved instantly. It’s a perfect example of how the PCM can create symptoms that mimic other failures, making a correct diagnosis crucial. This 2001-2002 Century PCM is often the root cause of those hard-to-diagnose electrical gremlins.
Common Signs of a Failing PCM
- ✔ Check Engine Light is on with codes like P0601, P0602, P0605 (Module Memory/Programming Errors).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ The transmission shifts harshly or at the wrong times.
- ✔ Stalling for no apparent reason, either while driving or at idle.
- ✔ Communication loss codes, such as U0100.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental contact.
- ✔ Locate the Module: On your Buick Century, the PCM is typically located in the engine compartment on the left-hand (driver’s) side, often near the air filter housing.
- ✔ Disconnect Connectors: Carefully unplug the electrical wiring harnesses from the old module. There are usually release tabs that need to be pressed or lifted. Avoid forcing them.
- ✔ Remove the Old PCM: Unbolt the module from its mounting bracket. Keep the hardware, as you may need it for the new installation.
- ✔ Install the New PCM: Mount the new module securely onto the bracket and re-fasten the bolts.
- ✔ Reconnect Everything: Plug the wiring harnesses firmly into the new PCM until they click into place. Reconnect the negative battery terminal.
- ✔ Perform Security Relearn (If Necessary): In many GM vehicles, a simple security relearn procedure is required. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your owner’s manual for the specific procedure for your vehicle.
Verified Vehicle Compatibility
This module, part number 09360210 (also compatible with 12209614 and 12202600), is a guaranteed fit for a wide range of GM vehicles. We program it specifically for your VIN. Please confirm your vehicle is on the list below:
- Alero: 2001-2003 (3.4L)
- Aurora: 2001-2002 (3.5L)
- Aztek: 2001-2003
- Century: 2001-2002
- Grand Am: 2001-2003 (3.4L)
- Grand Prix: 2001-2003 (3.1L)
- Impala: 2001-2003 (3.4L)
- Intrigue: 2001-2002
- Lumina Car: 2001
- Malibu: 2001-2003
- Montana: 2001-2002
- Monte Carlo: 2001-2003 (3.4L)
- Regal: 2000-2002
- Rendezvous: 2002-2003
- Silhouette: 2001-2002
- Venture: 2001-2003
If you have any questions about fitment, don’t hesitate to contact us. Providing a reliable part is our top priority, and that starts with ensuring this 2001-2002 Century PCM is the right one for your car.
Frequently Asked Questions
Why do you need my VIN?
Your VIN (Vehicle Identification Number) is essential. It allows us to program the PCM with the exact factory software and calibrations for your car’s specific options, engine, and transmission. This ensures perfect compatibility and function right out of the box.
Will I need to do any other programming after installation?
No dealer programming is needed. However, you may need to perform a simple security relearn procedure, also known as a ‘key relearn.’ This can typically be done in your driveway in about 15-30 minutes and does not require special tools. We include instructions for this process.
Is this part number 09360210 compatible with other numbers?
Yes. This module is a direct replacement for service numbers 12209614 and 12202600. As long as your original module carries one of these numbers, this part will work perfectly once programmed to your VIN.
How can I be sure my PCM is the problem?
While the symptoms listed above are strong indicators, the best way to be certain is with a proper diagnosis from a qualified mechanic. Common diagnostic trouble codes pointing to PCM failure include P0601 through P0606. If other potential causes like sensors, wiring, or ignition components have been ruled out, the PCM is the likely culprit.
What makes your module a better choice than a used one from a junkyard?
A used module will be programmed to the donor car’s VIN and will not work in your vehicle without being reprogrammed by a dealer. Furthermore, it carries the same risk of failure as your old one. Our module is professionally tested, inspected, and flashed with the newest GM software, providing a much more reliable, long-term solution.