Is Your Grand Am, Cavalier, or S10 Running Rough?
If you’re dealing with a persistent check engine light, erratic engine behavior, a no-start condition, or failing emissions tests, a faulty Powertrain Control Module (PCM) is often the culprit. In my 20+ years as a technician, I’ve seen how a failing PCM can turn a reliable vehicle into a source of constant frustration. It’s the brain of your engine, and when it malfunctions, it can cause a cascade of confusing and costly problems. Don’t keep throwing parts at the problem; get to the heart of the issue.
The Direct Solution: A VIN-Programmed PCM
This isn’t just a replacement part; it’s a complete solution. We take a quality-tested PCM, service number 16228016, and program it specifically to your vehicle’s 17-digit Vehicle Identification Number (VIN). This process loads the latest GM-certified software and calibrations, ensuring your engine, transmission, and emissions systems operate exactly as the factory intended. You get restored performance and reliability without the expensive trip to a dealership for programming.
Expert Pro Tip: Check Your Connections First
Before you condemn your old PCM, take a moment to inspect the electrical connectors that plug into it. Over the years, moisture and vibration can cause corrosion on the pins. I’ve seen dozens of vehicles where simply cleaning the harness connectors with a good quality electronic cleaner and a small brush restored normal operation. A few minutes of inspection can save you from replacing a perfectly good part.
Symptoms of a Failing 1997-1999 Grand Am PCM
A failing engine computer can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely fix:
- ✔ Unexplained Check Engine Light (CEL)
- ✔ Engine cranks but will not start
- ✔ Rough or unstable idle
- ✔ Poor acceleration and loss of power
- ✔ Decreased fuel economy
- ✔ Harsh or incorrect automatic transmission shifting
- ✔ Communication errors with diagnostic scan tools
Plug-and-Play Installation: No Dealer Visit Required
Installing your new PCM is a straightforward process you can do at home with basic tools. Because we program it to your VIN before shipping, you can skip the dealership entirely. Just follow these simple steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On most of these models, the PCM is found in the engine bay (often on the passenger side firewall or inner fender) or under the dash. For a ’99 Grand Am, it’s typically on the left-hand side of the center dash area.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. Inspect them for any signs of damage or corrosion.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed PCM into place.
- Reconnect Everything: Securely plug the wiring harnesses into the new module until they click. Reconnect the negative battery terminal.
- Perform Security Relearn (If Necessary): On some GM vehicles, a simple security relearn procedure is needed. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions will be provided if required for your specific vehicle.
Guaranteed Fitment & Compatibility
This module is a direct replacement for service numbers 16228016, 8162280160, and 16245305. Please verify your part number before ordering. This unit is compatible with the following vehicles:
- Pontiac Grand Am: 1997-1998 (2.4L), 1999 (2.4L, ID 16228016)
- Pontiac Sunfire: 1997-1999
- Chevrolet Cavalier: 1997-1999
- Chevrolet Malibu: 1997-1999 (2.4L)
- Chevrolet S10 / GMC Sonoma: 1997-1999 (2.2L), 2000 (2.2L, VIN 4)
- Isuzu Hombre: 1996, 1997-2000 (2.2L)
- Buick Skylark: 1997-1998 (2.4L)
- Oldsmobile Achieva: 1997-1998 (2.4L)
IMPORTANT: After purchase, please send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information to complete the required programming.