Restore Peak Performance to Your 1997 GM Vehicle
Is your 1997 Buick Park Avenue, Grand Prix, or another GM classic giving you headaches? If you’re dealing with a persistent Check Engine Light, unpredictable stalling, poor fuel economy, or harsh shifting, the culprit is often a failing Powertrain Control Module (PCM). As the electronic brain of your vehicle, the PCM governs everything from fuel delivery and spark timing to transmission shifts. When it falters, the entire driving experience suffers. This isn’t just an annoyance; it’s a critical component failure that needs a reliable solution.
This Powertrain Control Module, part number 19109047, is the definitive fix. We take the guesswork and extra steps out of the repair process. Before we ship the module, we program it with the latest GM software updates, precisely matched to your vehicle’s unique Vehicle Identification Number (VIN). This means no expensive trips to the dealership for programming. It arrives at your door ready for a straightforward installation, designed to restore the smooth, reliable performance you expect from your car.
A Technician’s Notebook: The Ghost in the Machine
I remember a 1997 Buick Regal with the supercharged 3.8L that came into my bay with a bizarre, intermittent stalling issue. It would run perfectly for days, then suddenly die at a stoplight with no warning and no specific trouble codes. The owner had already replaced the fuel pump and ignition control module. After checking all the wiring for the third time, I hooked up a lab scope to the PCM outputs. I noticed the injector pulse signals would just vanish for a split second before the stall. It was a classic case of internal PCM failure caused by heat and age. We installed a VIN-programmed module just like this one, and the car ran flawlessly. It’s a reminder that sometimes the most confusing problems have a simple, direct solution.
Is Your Vehicle Showing These Signs of PCM Failure?
A failing PCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your vehicle’s main computer needs attention:
- ✔ Persistent Check Engine Light (CEL)
- ✔ Stalling for no apparent reason or difficulty starting
- ✔ Noticeable decrease in fuel efficiency
- ✔ Rough or erratic automatic transmission shifting
- ✔ Engine misfires or runs poorly
- ✔ Communication error codes, such as P0601 (Internal Control Module Memory Check Sum Error)
- ✔ Failure to pass an emissions inspection
A Straightforward Guide to Installation
Replacing the PCM on these GM vehicles is a job most DIYers can handle with basic tools. Our pre-programmed module makes it even simpler. Follow these general steps to get back on the road:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: On most of these models, the PCM is located inside the air filter box in the engine bay. You may need to remove the air intake ducting and filter for access.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old PCM. These connectors have locking tabs that need to be released before pulling. Avoid forcing them.
- Remove the Old Module: Unbolt the PCM from its mounting bracket or housing and remove it from the vehicle.
- Install the New Module: Seat your new, pre-programmed PCM into the mounting bracket and secure it. Re-attach the wiring harness connectors, ensuring they click firmly into place.
- Final Steps: Reassemble the air filter box and intake components. Reconnect the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘On’ position for 10-15 minutes.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of 1997 General Motors vehicles. Please provide your VIN upon purchase to guarantee perfect programming for your specific model and options. This part is compatible with part numbers 16227797 and 19109047.
CAMARO 97 Electronic Control Module; 6-231 (3.8L)
EIGHTY EIGHT 97 Electronic Control Module; (6-231, 3.8L), w/supercharged option
FIREBIRD 97 Electronic Control Module; 6-231 (3.8L)
GRAND PRIX 97 Electronic Control Module; 6-231 (3.8L), w/supercharged option
LUMINA CAR 97 Electronic Control Module; 6-207 (3.4L)
MONTE CARLO 97 Electronic Control Module; 6-207 (3.4L)
PARK AVENUE 97 Electronic Control Module; (6-231, 3.8L)
REGAL 97 Electronic Control Module; (6-231, 3.8L), w/supercharged option
RIVIERA 97 Electronic Control Module; (6-231, 3.8L)
Frequently Asked Questions
Why do you need my VIN?
Your VIN (Vehicle Identification Number) is essential for us to program the PCM with the correct software for your car’s specific engine, transmission, and factory options. This ensures perfect compatibility and function right out of the box.
Is this module truly “plug and play”?
Yes, because we program it to your VIN before shipping, it is ready to be installed without needing a trip to a dealer. In some cases, a simple security relearn procedure (turning the key on for 10-15 minutes) may be required, which you can easily do yourself.
Will this fix my car’s specific problem?
This module will correct issues directly caused by a faulty PCM, such as the symptoms listed above. While the PCM is a common failure point, we always recommend a proper diagnosis by a qualified mechanic to confirm it is the source of your problem before ordering.
What is the difference between part numbers 19109047 and 16227797?
These are interchangeable GM part numbers for the same hardware. Our module is a compatible replacement for either number, and the VIN-specific programming ensures it will function correctly regardless of the original part number in your vehicle.
Do I need to send my old PCM back?
No core charge or return is required for this part. You can keep or responsibly dispose of your old module.