Is Your 1997 GM Vehicle Running Rough?
If you’re dealing with frustrating issues like unpredictable stalling, harsh transmission shifts, a persistent check engine light, or a car that just won’t start, the problem often points directly to a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, a faulty PCM can wreak havoc on your vehicle’s performance and reliability. This isn’t just an inconvenience; it’s a critical failure that needs a dependable solution.
The Direct-Fit Solution for Your Classic GM
This Powertrain Control Module, compatible with part numbers 19109047 and 16227797, is the definitive answer to your vehicle’s electronic woes. We take the guesswork and hassle out of the repair. Before we ship your module, our technicians will program it with the latest GM software updates specifically for your vehicle’s VIN. This means it arrives at your door ready for a straightforward installation, restoring the precise performance and efficiency your car had when it left the factory.
Common Symptoms of a Failing 1997 Bonneville PCM:
- ✔ Unexplained Check Engine Light illumination
- ✔ Vehicle refuses to start or stalls intermittently
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Noticeable decrease in fuel economy
- ✔ Poor engine performance, including hesitation or misfires
- ✔ Communication errors with diagnostic scan tools
Expert Pro Tip: Check Your Grounds Before You Start
Over my 20+ years in the shop, I’ve seen countless PCMs replaced when the real culprit was a simple, corroded ground wire. Before you install your new module, take 10 minutes to locate and inspect the main engine-to-chassis ground strap. It’s often a braided metal strap near the engine block. Unbolt it, clean the contact points on both the engine and the frame with a wire brush until they’re shiny, and re-tighten securely. A poor ground can cause voltage spikes that mimic PCM failure and can even damage a new unit over time. This simple step ensures your new PCM has a stable foundation to work from.
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest benefits of our service is that this module is delivered ready to install. The VIN-specific programming handles the complex part, so you can perform the replacement yourself and avoid expensive dealership programming fees.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to ensure all systems are discharged.
- Locate the PCM: On most 1997 GM models like the Bonneville and Grand Prix, the PCM is located inside the air filter box assembly. You will need to remove the air filter cover and filter to access it.
- Disconnect the Harnesses: Carefully unclip and disconnect the electrical wiring harnesses from the old PCM. Inspect the connectors for any signs of corrosion or bent pins.
- Swap the Modules: Unbolt and remove the old PCM from its mounting bracket. Secure the new module in its place.
- Reconnect Everything: Firmly plug the wiring harnesses into your new, programmed PCM. Reassemble the air filter box and reconnect the negative battery terminal.
- Final Step: Your vehicle is now ready to start. It may take a few drive cycles for the computer to complete its internal learning processes with the vehicle’s sensors.
Guaranteed Compatibility
This module is a direct replacement for a wide range of popular 1997 GM vehicles. Please verify your model and engine options below to ensure a perfect match:
- BONNEVILLE 97: Electronic Control Module; (6-231, 3.8L), w/supercharged option
- EIGHTY EIGHT 97: Electronic Control Module; (6-231, 3.8L), w/supercharged option
- GRAND PRIX 97: Electronic Control Module; 6-231 (3.8L), w/supercharged option
- REGAL 97: Electronic Control Module; (6-231, 3.8L), w/supercharged option
- PARK AVENUE 97: Electronic Control Module; (6-231, 3.8L)
- RIVIERA 97: Electronic Control Module; (6-231, 3.8L)
- CAMARO 97: Electronic Control Module; 6-231 (3.8L)
- FIREBIRD 97: Electronic Control Module; 6-231 (3.8L)
- MONTE CARLO 97: Electronic Control Module; 6-207 (3.4L)
- LUMINA CAR 97: Electronic Control Module; 6-207 (3.4L)
Important: After completing your purchase, please send us your vehicle’s 17-digit VIN. This is essential for us to program the module correctly before shipment. Your order cannot be processed without it.