Restore Peak Performance to Your GM Vehicle
Is your 1997-1999 Chevrolet Cavalier, Sunfire, or S10 suffering from erratic behavior? Issues like poor fuel economy, harsh shifting, a persistent check engine light, or even a no-start condition can often be traced back to a failing Powertrain Control Module (PCM). This module is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shift points and emissions controls. When it fails, the symptoms can be frustrating and difficult to diagnose. This replacement PCM, part number 8162280160, is the definitive solution to get your vehicle running reliably again.
From the Diagnostic Bay
We had a 1998 Pontiac Sunfire come in that had its owner completely stumped. The car would run fine for about 20 minutes and then stall randomly at stoplights. No consistent check engine codes were being stored, just a few random communication errors that would clear themselves. The owner had already replaced the fuel pump and ignition module. After extensive testing, we found that the PCM’s internal voltage regulator was failing as it heated up, causing it to shut down intermittently. Installing a correctly programmed replacement PCM like this one solved the problem instantly. It’s a classic example of how a faulty computer can mimic a dozen other mechanical issues.
Identifying a Faulty 1997-1999 Cavalier PCM
A failing engine computer can manifest in numerous ways, often mimicking other component failures. Before condemning the module, it’s essential to rule out simpler issues like bad sensors or wiring. However, if you’re experiencing a combination of the following, the PCM is a likely culprit. This module is the reliable fix for these complex electronic issues, ensuring your vehicle operates as intended by the manufacturer.
Common Symptoms of a Failing PCM
- ✔ Unexplained Check Engine Light (CEL) illumination, often with communication-related trouble codes (U-codes).
- ✔ Engine stalling, stumbling, or misfiring, especially after the vehicle has warmed up.
- ✔ Harsh or erratic automatic transmission shifting, or getting stuck in one gear (limp mode).
- ✔ Complete no-start condition where the engine cranks but will not fire up.
- ✔ Noticeable decrease in fuel economy.
- ✔ Failure to pass state emissions testing.
- ✔ Intermittent issues with gauges or other electronic components.
The Plug-and-Play Solution
Finding a replacement PCM for an older vehicle can be a challenge. Finding one that works correctly out of the box is even harder. That’s why we offer this module fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). When you place your order, simply provide us with your VIN, and our technicians will flash the unit with the latest, most stable software updates from General Motors. This critical step ensures that the computer has the correct information for your vehicle’s engine, transmission, and options package. This process eliminates the need for an expensive trip to the dealership for programming, saving you time and money.
This PCM is a direct replacement for service numbers 16228016, 8162280160, and 16245305. Please verify the number on your original module to ensure compatibility.
GRAND AM 99 Electronic Control Module; (LH center dash), 2.4L, ID 16228016
MALIBU 99 Electronic Control Module; (LH dash), 2.4L
S10/S15/SONOMA 99 Electronic Control Module; (RH front engine compartment), 2.2L
SKYLARK 97-98 Electronic Control Module; 4-146 (2.4L)
CAVALIER 97-99 Electronic Control Module; (RH front engine compartment)
MALIBU 97-98 Electronic Control Module; 4-146 (2.4L)
GRAND AM 97-98 Electronic Control Module; 4-146 (2.4L)
S10/S15/SONOMA 00 Electronic Control Module; (RH front engine compartment), 2.2L, VIN 4 (8th digit)
ISUZU HOMBRE 96 Electronic Control Module
SUNFIRE 97-99 Electronic Control Module; (RH front engine compartment)
S10/S15/SONOMA 97-98 Electronic Control Module; 4-134 (2.2L)
ACHIEVA 97-98 Electronic Control Module; 4-146 (2.4L)
ISUZU HOMBRE 99-00 Electronic Control Module; (RH front engine compartment), 2.2L (4 cylinder)
Post-Installation Note
After installing your new 1997-1999 Cavalier PCM, you may need to perform a simple security relearn procedure, also known as the Passlock relearn. This allows the new PCM to synchronize with your vehicle’s anti-theft system. This procedure does not require any special tools and can typically be done in your driveway in about 30 minutes. Instructions are widely available online or can be provided upon request.
Frequently Asked Questions
Do I need to have this PCM programmed?
No. This module comes fully pre-programmed to your vehicle’s VIN. Simply provide your VIN at checkout, and we handle all the flashing with the latest GM software before it ships. It will be ready for installation upon arrival.
What is a security relearn procedure?
The security relearn, or Passlock relearn, is a simple sequence of key cycles that synchronizes the new PCM with your car’s existing anti-theft system. It’s a necessary step to allow the vehicle to start after the computer has been replaced. It does not require any special tools.
Where is the PCM located on my vehicle?
On most compatible models like the Cavalier, Sunfire, and S10/Sonoma, the PCM is located in the engine compartment, typically on the passenger side near the firewall or inner fender.
How do I find my original part number?
Your original part number is printed on a sticker on the case of your current PCM. You will need to locate and remove the module to read this sticker. This part is a direct replacement for service numbers 16228016, 8162280160, and 16245305.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM, then yes, this part will resolve the issue. However, if the light is on due to a faulty sensor, wiring, or other mechanical problem, you will still need to address that separate issue.