Restore Peak Performance to Your GM Vehicle
Is your Pontiac Sunfire, Chevy Cavalier, or S10 pickup suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your vehicle’s engine and transmission. A faulty PCM can cripple your vehicle’s performance, fuel economy, and reliability. This direct-fit replacement PCM, part number 16228016, is the definitive solution to get your vehicle running smoothly and efficiently again.
This isn’t just a generic part off the shelf. We provide a fully programmed module tailored specifically to your vehicle. Upon purchase, you simply provide us with your Vehicle Identification Number (VIN), and our technicians will flash the unit with the latest, most stable GM factory software for your exact make, model, and year. This critical step ensures seamless communication with your vehicle’s other systems, eliminating the need for an expensive trip to the dealership for programming. It arrives at your door ready for installation.
Diagnosing and Replacing Your 1997-1999 Sunfire PCM
The PCM is the brain of your engine’s operation, controlling fuel injection, ignition timing, emissions systems, and more. When it begins to fail, the symptoms can be intermittent and difficult to diagnose. You might notice a gradual decline in performance or sudden, unpredictable problems. Replacing a faulty 1997-1999 Sunfire PCM is often the most effective way to resolve these deep-seated electronic issues and restore the vehicle’s original drivability and dependability.
From the Diagnostic Bay
We had a 1998 Chevy S10 with the 2.2L engine come in with a bizarre issue. The owner said it would randomly stall at stoplights, but only after it was fully warmed up. There were no consistent trouble codes, just a generic P0300 random misfire that would pop up occasionally. We checked fuel pressure, spark, and sensors—everything looked fine. On a hunch, we put a scope on the injector control signals from the PCM. Sure enough, after 20 minutes of idling, the signal for injector #3 would just drop out for a split second, enough to cause a stumble and stall. A new, correctly programmed PCM fixed it instantly. It’s a great reminder that when all the mechanical parts check out, the computer is often the culprit.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) illumination.
- ✔ Engine stalling or cutting out unexpectedly.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough or erratic engine idling.
- ✔ Poor acceleration and overall loss of power.
- ✔ Failed emissions test.
- ✔ Communication errors with diagnostic scan tools.
This module is a direct replacement for service numbers 16228016, 8162280160, and 16245305. Please verify the part number on your original unit to ensure compatibility. By choosing our pre-programmed solution, you are getting a reliable part that is ready to install right out of the box, saving you time, money, and the headache of additional programming procedures. Restore your vehicle’s core functionality with this essential component.
Frequently Asked Questions
Do I need to have this PCM programmed by a dealer?
No. This PCM comes pre-programmed to your vehicle’s specific VIN. You must provide your VIN at or after checkout so we can load the correct GM software before shipping it to you.
What is a VIN and where do I find it?
The VIN is your 17-digit Vehicle Identification Number. It can be found on your vehicle’s registration, insurance card, or on a small plate on the driver’s side of the dashboard, visible through the windshield.
Is this a difficult part to install?
For someone with moderate mechanical experience, the installation is straightforward. It typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module to swap in the new one. However, we always recommend professional installation if you are not comfortable with automotive repair.
Will this fix my check engine light?
If the check engine light and associated codes are being caused by a faulty PCM, then this part will resolve the issue. It’s important to properly diagnose the vehicle first, as other failing sensors or components can also trigger a check engine light.
Do I need to perform a security relearn procedure?
For many GM vehicles of this era, a security relearn (often called a Passlock or VATS relearn) may be necessary after installation. This is a simple procedure that typically takes 10-30 minutes and involves cycling the ignition key. Instructions are widely available online or in service manuals.