Restore Peak Performance to Your 1997 GM Vehicle
Is your 1997 Buick Riviera, Bonneville, or Grand Prix suffering from frustrating drivability issues? An erratic idle, poor fuel economy, harsh shifting, or a persistent Check Engine Light can often be traced back to a failing Powertrain Control Module (PCM). This component is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shift points. When it begins to fail, the symptoms can be widespread and difficult to diagnose. This replacement module, part number 19109047, is the definitive solution to restore your vehicle’s original performance and reliability.
From the Diagnostic Bay
We once had a 1997 Buick Regal with the supercharged 3.8L come in with what the owner was sure was a failing transmission. It was shifting hard, hesitating, and occasionally throwing a transmission-related code. He had already spent hundreds on a fluid flush and a new solenoid pack with no improvement. After plugging in our scanner, we noticed erratic data from the PCM. We swapped in a known-good, programmed module, and the car drove like it just rolled off the assembly line. It’s a classic case where the ‘brain’ was the problem, not the mechanical parts it controls. This highlights the importance of correctly diagnosing PCM failure.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various engine or transmission codes.
- ✔ Unexplained drops in fuel efficiency.
- ✔ Harsh, erratic, or delayed automatic transmission shifts.
- ✔ Engine stumbling, hesitating, or stalling unexpectedly.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Misfires or a rough idle that can’t be traced to spark plugs or coils.
- ✔ Failure to pass state emissions testing.
The Plug-and-Play Solution: Your 1997 Riviera Powertrain Control Module
Finding a reliable replacement computer for a classic vehicle can be a challenge. Our solution eliminates the guesswork and the need for expensive dealership programming. When you order this 1997 Riviera Powertrain Control Module, we flash it with the latest official GM software updates specifically for your vehicle. All we need is your Vehicle Identification Number (VIN) during the checkout process. This ensures that when the part arrives, it is a true plug-and-play component. Simply disconnect the battery, swap the module, reconnect the battery, and you’re ready to perform the simple security relearn procedure (if necessary). You get a precisely calibrated part without ever leaving your garage.
Guaranteed Compatibility
This module is a direct replacement for original part numbers 19109047 and 16227797. It is guaranteed to be compatible with the following 1997 models:
- 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)
By purchasing this pre-programmed 1997 Riviera Powertrain Control Module, you are not just buying a part; you are investing in a complete, hassle-free repair that will have your car running as the engineers intended.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We program the module to your vehicle’s specific VIN before we ship it to you. It arrives ready for installation, saving you time and the high cost of dealership programming.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship the module until we have this information.
What is the difference between a PCM, ECM, and ECU?
The terms are often used interchangeably. ECM (Engine Control Module) typically controls only engine functions. A PCM (Powertrain Control Module) is more comprehensive and manages both the engine and the transmission, which is standard on these GM vehicles.
Will this fix my car’s hard shifting problems?
A faulty PCM is a very common cause of transmission shifting issues in these vehicles, as it controls shift solenoids and line pressure. While not a guarantee for every situation, replacing a bad PCM often resolves these types of problems.
Is any special procedure needed after I install it?
In many cases, you may need to perform a simple security relearn procedure, often called a PassKey or VATS relearn. This can typically be done without special tools and involves a sequence of key turns. Instructions are widely available online for your specific model.