Is Your Cavalier or Sunfire Running Rough, Stalling, or Refusing to Start?
If you’re dealing with frustrating engine problems in your late-90s GM vehicle, a failing Powertrain Control Module (PCM) is often the culprit. Over my 20+ years in the shop, I’ve seen countless vehicles like the Cavalier, S10, and Malibu come in with issues that stump other mechanics—erratic idling, poor fuel economy, a persistent check engine light, or a dreaded no-start condition. More often than not, the vehicle’s electronic brain is the root cause.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a reliable PCM, service number 16245305, and flash it with the latest official GM software calibrated specifically to your vehicle’s VIN. This critical step ensures all systems communicate correctly and often corrects drivability issues that were present even when the car was new. You get a component that restores factory performance without the astronomical cost and hassle of a dealership visit.
The Easiest Way to Fix Complex Engine Problems
Don’t let a faulty computer keep your car off the road. A failing PCM can cause a cascade of confusing symptoms that lead to expensive, incorrect repairs. By replacing the module, you can directly address the source of the problem.
- ✔ Solves Common Issues: Corrects no-start conditions, rough idle, stalling, poor acceleration, and false diagnostic trouble codes (DTCs).
- ✔ VIN-Programmed for You: Arrives ready for installation, flashed with the newest GM calibrations for your specific vehicle. No additional programming needed.
- ✔ Saves Time and Money: Skip the diagnostic guesswork and expensive dealership programming fees. This is a DIY-friendly fix.
- ✔ Restores Performance: Ensures your engine and transmission operate efficiently, restoring lost power and fuel economy.
Expert Pro Tip from a 20-Year Veteran Technician
Before you install your new PCM, take a moment to closely inspect the wiring harness connectors. On these 20+ year-old vehicles, the plastic can become brittle and the terminal pins inside can get corroded or bent. A poor connection can mimic the symptoms of a failed PCM and prevent the new one from working correctly. Use a small pick and a flashlight to ensure every pin is straight and clean. A quick spray of electronic contact cleaner can make a world of difference and prevent future headaches.
Simple, Plug-and-Play Installation Guide
Installing your 1997-1999 Cavalier PCM is straightforward. In most compatible vehicles like the Cavalier, Sunfire, and S10/Sonoma, the module is located in the engine bay.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On most models, it’s found on the passenger side (RH) of the front engine compartment, often near the air filter box.
- Disconnect the Harnesses: Carefully unclip and remove the electrical connectors from the old module. Inspect them as mentioned in the pro tip above.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket.
- Install the New PCM: Mount your new, VIN-programmed module in place and securely fasten the bolts.
- Reconnect Everything: Plug the wiring harnesses back into the new PCM until they click. Reconnect the negative battery terminal.
- Final Step: Your vehicle is ready to start. The security system may require a simple relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.
Guaranteed Compatibility
This module is a direct replacement for units with service numbers 16228016, 8162280160, and 16245305. It is guaranteed to fit and function in the following vehicles:
- Chevrolet Cavalier: 1997, 1998, 1999
- Chevrolet Malibu: 1997, 1998 (2.4L), 1999 (2.4L)
- Chevrolet S10 / GMC Sonoma: 1997-1998 (2.2L), 1999 (2.2L), 2000 (2.2L, VIN 4)
- Pontiac Sunfire: 1997, 1998, 1999
- Pontiac Grand Am: 1997-1998 (2.4L), 1999 (2.4L, ID 16228016)
- Oldsmobile Achieva: 1997-1998 (2.4L)
- Buick Skylark: 1997-1998 (2.4L)
- Isuzu Hombre: 1996, 1997-1998 (2.2L), 1999-2000 (2.2L)
After your purchase, simply reply to our confirmation email with your vehicle’s 17-digit VIN, and we’ll handle the programming before shipping it directly to you.