Restore Peak Performance to Your 1997 GM Vehicle
Is your Oldsmobile Eighty Eight, Grand Prix, or another classic 1997 GM car suffering from frustrating issues like a persistent check engine light, erratic shifting, a rough idle, or even a no-start condition? Before you spend another dime on guesswork, consider the heart of your vehicle’s engine management system: the Powertrain Control Module (PCM). Over two decades of service can take a toll on these complex electronics, leading to symptoms that can be maddening to diagnose. This isn’t just a replacement part; it’s a direct solution to restore the smooth operation and reliability you depend on.
This PCM, part number 19109047, is meticulously prepared for your exact vehicle. We take the hassle and high cost out of the equation by programming the module with the latest GM software updates specifically for your car’s Vehicle Identification Number (VIN). This means no expensive trip to the dealership for programming. It arrives at your door ready for a straightforward installation, making it the perfect choice for both seasoned mechanics and dedicated DIY enthusiasts.
Case Study: A Tricky Diagnosis
I remember a 1997 Buick Regal with the supercharged 3.8L that came into my shop. The owner had replaced plugs, wires, and the ignition coil pack, but it still had a random, intermittent misfire under load that wouldn’t set a specific cylinder misfire code. After hours of chasing wires, we checked the PCM’s driver signal for the injectors. We found the signal for cylinder 3 was weak and erratic. We installed a pre-programmed PCM, and the car ran perfectly. The original module’s internal driver circuit had simply worn out—a common failure I’ve seen on dozens of these GM vehicles from that era.
Is Your Vehicle Showing These Symptoms?
A failing PCM can manifest in various ways. If you’re experiencing any of the following, this module is the likely solution:
- âś” Persistent Check Engine Light (CEL)
- âś” Diagnostic Trouble Codes (DTCs) like P0601 (Internal Control Module Memory Check Sum Error) or other communication errors.
- âś” Poor or declining fuel economy
- âś” Harsh or unpredictable automatic transmission shifting
- âś” Engine stalling, stumbling, or hesitating during acceleration
- âś” Complete no-start condition where the engine cranks but won’t fire
- âś” Failure to pass state emissions testing
A Straightforward Guide to Your 1997 Eighty Eight PCM Installation
Replacing the PCM is a manageable job for most DIYers. Following these steps ensures a safe and successful installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge.
- Locate the Module: On most of these GM vehicles, the PCM is located in the engine bay, often inside the air filter housing or mounted to the firewall.
- Disconnect Connectors: Carefully unlatch and remove the electrical wiring harness connectors from the old module. Inspect them for any corrosion or damage.
- Remove the Old PCM: Unbolt the module from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install the New PCM: Mount your new, pre-programmed PCM securely onto the bracket.
- Reconnect Everything: Firmly plug the wiring harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
- Final Step: Your vehicle may require a security relearn procedure, which can typically be done without special tools by cycling the key. Consult your vehicle’s service manual for specific instructions.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following 1997 models. Please ensure your vehicle’s engine and options match the list below. This unit is compatible with original part numbers 19109047 and 16227797.
BONNEVILLE 97: Electronic Control Module; (6-231, 3.8L), w/supercharged option
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
Do I need to do any programming myself?
No. This PCM arrives pre-programmed to your vehicle’s VIN. Simply provide us with your VIN at checkout, and we handle all the flashing with the latest GM software before it ships. It’s ready to install right out of the box.
What is a VIN and why do you need it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your car. It tells us critical information like the engine, transmission, and factory options. We use it to load the exact correct software for your specific vehicle, ensuring perfect compatibility.
Is this a difficult part to install?
For most individuals with basic hand tools, this is a straightforward installation. The module is typically easy to access. The most important steps are disconnecting the battery and ensuring the harness connectors are seated properly upon reinstallation.
Will this fix my car’s check engine light?
If the check engine light is caused by an internal failure of the PCM (like with code P0601), then yes, this part will resolve the issue. However, you should always have the codes read with a scanner to confirm the PCM is the likely cause before ordering.
What if my original part number is 16227797?
This module is a fully compatible replacement for part number 16227797. Part numbers are often superseded over time, and this unit serves as a direct replacement for both.