Is Your Sunfire or Cavalier Running Rough, Stalling, or Refusing to Start?
If you’re dealing with a frustrating check engine light, unpredictable engine behavior, or poor fuel economy in your 2000-2002 Pontiac Sunfire, Chevrolet Cavalier, or other compatible GM vehicle, a failing Powertrain Control Module (PCM) is a very likely culprit. As the brain of your vehicle, when the PCM starts to fail, it can create a cascade of confusing and costly problems. You might be chasing symptoms, replacing sensors, and still not finding a solution. This is the fix that gets to the heart of the problem.
The Direct, Reliable Solution: A VIN-Programmed PCM
Forget expensive diagnostic fees and the high cost of dealership programming. We offer a straightforward solution: a reliable, tested, used PCM that is professionally programmed to your vehicle’s exact specifications. All we need is your Vehicle Identification Number (VIN) after you place your order. We handle the complex part—flashing the module with the latest official GM software—so you receive a part that is truly ready for installation right out of the box.
Expert Pro Tip: Check This Before You Replace
Over my 20+ years in the shop, I’ve seen countless PCMs for these J-body cars (Cavalier/Sunfire) get replaced when the real issue was simpler. Before you swap the module, locate the main engine-to-chassis ground strap near the PCM on the passenger side strut tower. These straps are notorious for corroding, causing high resistance. A bad ground can starve the PCM of proper voltage, mimicking all the symptoms of a complete failure. A quick wire brush cleaning and tightening the connection has saved my customers hundreds of dollars and is a critical check for any DIYer.
Why Your 2000-2002 Sunfire PCM Needs to Be Replaced
The electronic components inside a PCM are subjected to years of heat cycles, vibration, and electrical stress. Over time, this leads to internal circuit board failures, solder joint cracks, and processor malfunctions. This isn’t just wear and tear; it’s the natural lifecycle of complex electronics. When this happens, you’ll notice symptoms that can be maddening to diagnose:
- ✔ Persistent Check Engine Light (CEL) with various codes
- ✔ Vehicle won’t start or has a hard starting condition
- ✔ Rough or unstable idle
- ✔ Engine stalling unexpectedly while driving
- ✔ Noticeable decrease in fuel mileage
- ✔ Failure to communicate with a diagnostic scan tool
- ✔ Harsh or erratic automatic transmission shifting
Plug-and-Play Installation: No Dealer Visit Required
Installing your programmed PCM is a job most DIY mechanics can handle in under an hour with basic tools. Our VIN programming makes this a direct swap.
- Safety First: Disconnect the negative terminal from your car’s battery and wait at least 15 minutes for the system capacitors to discharge.
- Locate the PCM: On the 2000-2002 Sunfire and Cavalier, the PCM is typically located in the engine compartment, on the passenger side, near the firewall or strut tower. For Grand Am and Alero models, it’s often found inside the car, in the center dash area.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the PCM from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed PCM and securely reconnect the electrical harnesses. You should feel a solid ‘click’ as they lock into place.
- Reconnect the Battery: Re-attach the negative battery terminal. Your vehicle is now ready to start with its new brain.
Guaranteed Compatibility
This engine computer is a direct replacement for several part numbers, ensuring a perfect fit for your vehicle. Please verify that your original module carries one of these numbers:
Part Numbers: 09356249, 16268310, 9356249, 9392873
This part will fit these makes and models with these options:
- CAVALIER 00-01 Electronic Control Module; (RH front engine compartment)
- CAVALIER 02 Electronic Control Module; (RH front engine compartment), ID 9356249
- GRAND AM 00-01 Electronic Control Module; (LH center dash), 2.4L
- SUNFIRE 00-01 Electronic Control Module; (RH front engine compartment)
- SUNFIRE 02 Electronic Control Module; (RH rear engine compartment), ID 9356249
- ALERO 00-01 Electronic Control Module; (LH center dash), 2.4L
Stop the guesswork and replace the core component. Provide your VIN at checkout and let us send you the permanent solution to get your car running smoothly again.