Restore Peak Performance to Your 1997 GM Vehicle
Is your 1997 Pontiac Grand Prix, Bonneville, or other GM vehicle suffering from perplexing engine issues? A faulty Powertrain Control Module (PCM) is often the hidden culprit behind poor performance, erratic behavior, and persistent check engine lights. This replacement PCM, part number 19109047, is the definitive solution to restore your vehicle’s factory operation and reliability. It arrives at your door pre-programmed with the latest GM software, specifically matched to your vehicle’s unique Vehicle Identification Number (VIN). This eliminates the need for expensive dealership programming, saving you time and money.
From the Diagnostic Bay
I once had a 1997 Regal with the 3.8L supercharged engine come into the shop. The owner had spent a fortune replacing the mass airflow sensor, ignition coils, and even the fuel pump trying to chase down an intermittent stalling and hard-starting issue. No codes were stored consistently. After checking all the basics, we hooked up a scope to the injector and ignition control signals coming from the PCM. We found the signals were dropping out randomly. We installed one of these VIN-programmed PCMs, and the car ran perfectly. It’s a classic case where the brain, not the components it controls, was the source of the problem.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various codes
- ✔ Engine stalling, stumbling, or rough idling
- ✔ No-start or difficult starting conditions
- ✔ Noticeable decrease in fuel economy
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Failure to pass emissions testing
- ✔ Communication errors with diagnostic scan tools
The Superior Solution: A VIN-Programmed 1997 Grand Prix PCM
Don’t settle for a generic, one-size-fits-all module. The key to a successful and lasting repair is a PCM that is correctly configured for your exact vehicle. When you order from us, we take your VIN and flash this module with the specific GM-certified calibration your car requires. This process ensures all systems—from the engine and transmission to the anti-lock brakes and security system—communicate and function together as the factory intended. This is a direct-fit replacement for original part numbers 19109047 and 16227797.
Simple Installation Process
Installation is straightforward for the DIY mechanic or your trusted professional. The PCM is typically located in the engine bay. The process involves disconnecting the battery, unplugging the electrical connectors from the old module, unbolting it, and then installing the new one in the reverse order. Once installed, some vehicles may require a simple security relearn procedure, which can often be done without special tools. This puts you back on the road quickly, with confidence in your repair.
Complete Fitment List
This electronic control module is a direct replacement for the following 1997 vehicles:
- Bonneville: Electronic Control Module; (6-231, 3.8L), w/supercharged option
- Camaro: Electronic Control Module; 6-231 (3.8L)
- Eighty Eight: Electronic Control Module; (6-231, 3.8L), w/supercharged option
- Firebird: Electronic Control Module; 6-231 (3.8L)
- Grand Prix: Electronic Control Module; 6-231 (3.8L), w/supercharged option
- Lumina Car: Electronic Control Module; 6-207 (3.4L)
- Monte Carlo: Electronic Control Module; 6-207 (3.4L)
- Park Avenue: Electronic Control Module; (6-231, 3.8L)
- Regal: Electronic Control Module; (6-231, 3.8L), w/supercharged option
- Riviera: Electronic Control Module; (6-231, 3.8L)
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM) is the main computer in your vehicle. It controls all aspects of engine and transmission operation, including fuel mixture, ignition timing, and transmission shift points, to ensure optimal performance, fuel efficiency, and emissions control.
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) allows us to load the exact, factory-specified software and calibrations for your car’s specific options and build. This ensures perfect compatibility and function, just like the original part, without needing a trip to the dealer.
Is this part difficult to install?
For most individuals with basic mechanical skills, the installation is straightforward. It typically involves disconnecting the battery and swapping the module. However, we always recommend consulting a service manual for your specific vehicle or seeking help from a qualified technician if you are unsure.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this part will resolve the issue. It’s crucial to have your vehicle properly diagnosed to confirm the PCM is the root cause before ordering, as the light can be triggered by many other components.
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. ECM (Engine Control Module) traditionally controlled only the engine. PCM (Powertrain Control Module) is a more modern term for a module that controls both the engine and the transmission. For this 1997 Grand Prix PCM, it functions as the central powertrain computer.