Is Your 1997 GM Vehicle Running Rough, Stalling, or Throwing Codes?
If you’re dealing with a frustrating check engine light, erratic engine behavior, or transmission shifting problems in your 1997 Grand Prix, Monte Carlo, or other compatible GM model, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer for your engine and transmission, its failure can cause a cascade of issues that are difficult to diagnose. This isn’t just a part; it’s the brain of your vehicle, and when it’s not working right, nothing is.
The Direct-Fit, No-Hassle Solution
Forget expensive dealership visits and the headache of finding a shop that can program an older module. We provide a reliable, fully tested Powertrain Control Module that comes programmed specifically to your vehicle’s VIN. We load the latest GM-certified software before it ships, making this a true plug-and-play repair. You get a component that restores original performance and drivability right out of the box.
Expert Pro Tip: Check Your Connectors First!
Before you condemn your old PCM, take a moment to inspect the harness connectors. Over 20+ years, the weather-pack seals can degrade, allowing moisture to seep in and cause corrosion on the pins. I’ve seen many 3.8L engines where a simple cleaning with a contact cleaner and a small wire brush restored the connection and solved the problem. If the pins are green or white with corrosion, clean them thoroughly before installing your new module to ensure a perfect connection and prevent future issues.
Common Symptoms of a Failing 1997 Grand Prix PCM
A faulty engine computer can manifest in numerous ways. Over my two decades in the shop, I’ve seen these modules cause some of the most confusing symptoms. If your vehicle is experiencing any of the following, a failing PCM is a likely cause:
- ✔ Persistent Check Engine Light (CEL) with communication error codes.
- ✔ Unexplained engine stalling or cutting out while driving.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Noticeable decrease in fuel economy.
- ✔ Engine misfires or rough idling even after replacing plugs and wires.
- ✔ Complete no-start condition where the fuel pump or ignition system doesn’t activate.
Plug-and-Play Installation: No Dealer Visit Required
Installing your VIN-programmed module is a straightforward process you can do at home with basic tools. This means no towing fees and no waiting for a dealership appointment.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On most of these vehicles, the PCM is located inside the air filter box assembly. You will need to remove the air filter cover to access it.
- Disconnect the Harnesses: Carefully unclip and remove the electrical connectors from the old module. Inspect them for any corrosion as mentioned in our pro tip.
- Swap the Modules: Remove the old PCM from its mounting bracket and install the new one in its place.
- Reconnect Everything: Securely plug the wiring harnesses into your new module and reconnect the negative battery terminal.
- Perform Security Relearn (If Necessary): While we program the module to your VIN, some vehicles may require a simple key-cycle security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes.
Guaranteed Compatibility
This module is a direct replacement for part numbers 19109047 and 16227797. It is guaranteed to fit and function in the following 1997 models with the specified engines:
- Bonneville: 3.8L V6 (w/ supercharged option)
- Camaro: 3.8L V6
- Eighty Eight: 3.8L V6 (w/ supercharged option)
- Firebird: 3.8L V6
- Grand Prix: 3.8L V6 (w/ supercharged option)
- Lumina Car: 3.4L V6
- Monte Carlo: 3.4L V6
- Park Avenue: 3.8L V6
- Regal: 3.8L V6 (w/ supercharged option)
- Riviera: 3.8L V6
IMPORTANT: After purchasing, please provide us with your 17-digit Vehicle Identification Number (VIN) so we can program the module for your specific vehicle before shipment. This ensures a seamless installation and proper function.