Is your Buick Century, Grand Prix, or Impala suddenly stalling, running rough, or showing a persistent Check Engine Light? Before you spend a fortune at the dealership, consider the heart of your vehicle’s engine management system: the Powertrain Control Module (PCM). This isn’t just a replacement part; it’s a direct solution, pre-programmed with the latest GM software updates specifically for your vehicle’s VIN. We take the guesswork and the expensive programming fees out of the equation, delivering a component that’s ready to restore your car’s performance and reliability right out of the box.
A Technician’s Notebook: The Intermittent Stall Mystery
I once had a 2002 Pontiac Grand Am in my bay with a phantom problem. The owner said it would randomly stall at red lights, but never threw a consistent code. We checked fuel pressure, sensors, and wiring—everything looked fine. On a hunch, I monitored the PCM data stream during a long test drive. I noticed the processor would occasionally reset for a split second, just long enough to cut the engine. It was a classic case of internal PCM failure, something a standard code reader won’t always catch. Replacing it with a properly programmed module like this one solved the issue permanently. These intermittent faults are incredibly common on these platforms and often lead mechanics down a rabbit hole, but a quality 2001-2002 Century PCM is frequently the definitive fix.
Is Your Vehicle Showing These Telltale Signs of PCM Failure?
A failing PCM can cause a wide range of confusing symptoms. If you’re experiencing any of the following, this module is likely the solution you need. Look out for:
- âś” Unexplained Check Engine Light (CEL) illumination
- âś” Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0606 pointing to internal module failure
- âś” Harsh or erratic automatic transmission shifting
- âś” Sudden decrease in fuel economy
- âś” Engine stalling, stumbling, or refusing to start
- âś” Communication errors with diagnostic scan tools
- âś” Failure to pass state emissions testing
A Straightforward Guide to Installation
Installing your new PCM is a manageable job for a DIYer with basic tools. Following these steps will ensure a smooth process. Remember, your new module is pre-programmed, but your vehicle may require a security relearn procedure to sync with the new PCM.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- Locate the PCM: On most of these models, the PCM is located in the engine bay, typically on the driver’s side, often inside the air filter housing. On others (like the Alero/Grand Am), it’s under the dash. Consult a repair manual for your specific vehicle if you’re unsure.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New PCM: Mount your new, pre-programmed PCM and securely reconnect the electrical harnesses. Ensure they click into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Security Relearn: Your vehicle’s anti-theft system needs to recognize the new PCM. The standard procedure is the “10-Minute Relearn”: Turn the key to the “ON” position (don’t start it), wait 10-15 minutes until the security light turns off or stops flashing, then turn the key off for 10 seconds. Repeat this cycle two more times for a total of three cycles. The car should then start and run normally.
Verified Vehicle Compatibility
This Powertrain Control Module, part number 12202600, is a direct replacement for service numbers 12209614 and 09360210. It is guaranteed to fit the following GM vehicles:
- âś” Alero: 2001-2003 (3.4L)
- âś” Aurora: 2001-2002 (3.5L)
- âś” Aztek: 2001-2003
- âś” Century: 2001-2002
- âś” Grand Am: 2001-2003 (3.4L)
- âś” Grand Prix: 2001-2003 (3.1L)
- âś” Impala: 2001-2003 (3.4L)
- âś” Intrigue: 2001-2002
- âś” Lumina Car: 2001
- âś” Malibu: 2001-2003
- âś” Montana: 2001-2002
- âś” Monte Carlo: 2001-2003 (3.4L)
- âś” Regal: 2000-2002
- âś” Rendezvous: 2002-2003
- âś” Silhouette: 2001-2002
- âś” Venture: 2001-2003
This is the reliable, cost-effective solution for your vehicle. By purchasing a pre-programmed 2001-2002 Century PCM, you’re not just buying a part—you’re buying a complete repair that restores function and peace of mind. Place your order today and get your car back on the road where it belongs.
Frequently Asked Questions
2001-2002 Century PCM
Is the security relearn procedure difficult?
Not at all. The 30-minute key-cycle relearn procedure requires no special tools and is a standard process for many GM vehicles when a major component like the is replaced. Our installation guide provides the simple steps to follow.