Restore Peak Performance to Your GM Vehicle
Is your 1997 Pontiac Bonneville, Grand Prix, or another classic GM vehicle suffering from frustrating and hard-to-diagnose issues? A failing Powertrain Control Module (PCM) is often the culprit behind problems like a persistent check engine light, poor fuel economy, rough idling, or even a no-start condition. The PCM is the central computer of your vehicle, responsible for managing everything from fuel injection and spark timing to transmission shifting. When it fails, the entire system’s performance and reliability are compromised.
This replacement PCM, part number 16217058, is the definitive solution to get your vehicle running smoothly again. Unlike generic modules that require expensive trips to the dealership for programming, this unit arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We install the latest GM-certified software updates, ensuring optimal performance, fuel efficiency, and emissions control. This is a true plug-and-play solution designed to restore your vehicle to its original factory specifications.
Diagnosing a Faulty 1997 Bonneville PCM
A failing PCM can manifest in numerous ways, often mimicking other sensor or component failures. If you’re experiencing any of the following symptoms, your module may be the root cause. This module is the correct fix for these common issues.
- ✔ Persistent Check Engine Light (CEL) with various trouble codes
- ✔ Engine stalling or shutting off while driving
- ✔ Rough or erratic engine idle
- ✔ Noticeable decrease in fuel economy
- ✔ Harsh or incorrect automatic transmission shifting
- ✔ Vehicle fails to start, even with a good battery and starter
- ✔ Communication errors with diagnostic scan tools
Simple Installation and Guaranteed Compatibility
Replacing your 1997 Bonneville PCM is a straightforward process. Once you receive the module, simply disconnect the negative battery terminal, locate your old PCM, unplug the wiring harnesses, and unbolt it. Then, install the new module in its place, reconnect the harnesses, and re-attach the battery terminal. The final step for most vehicles is to perform a simple security relearn procedure, often called the “key-on/key-off” method, which pairs the new module to your vehicle’s anti-theft system. This procedure typically takes about 30 minutes and does not require any special tools.
This module is a direct replacement for part numbers 16217058 and 16218070 and is guaranteed to fit a wide range of 1997 General Motors vehicles. Please verify your vehicle is on the list below:
- ACHIEVA 97: Electronic Control Module; 6-191 (3.1L)
- BONNEVILLE 97: Electronic Control Module; (6-231, 3.8L), w/o supercharged option
- CENTURY 97: Electronic Control Module; (6-191, 3.1L)
- CUTLASS 97: Electronic Control Module; Supreme
- EIGHTY EIGHT 97: Electronic Control Module; (6-231, 3.8L), w/o supercharged option
- GRAND AM 97: Electronic Control Module; 6-191 (3.1L)
- GRAND PRIX 97: Electronic Control Module; 6-191 (3.1L)
- GRAND PRIX 97: Electronic Control Module; 6-231 (3.8L), w/o supercharged option
- LESABRE 97: Electronic Control Module; (6-231, 3.8L)
- LUMINA CAR 97: Electronic Control Module; 6-191 (3.1L)
- MONTE CARLO 97: Electronic Control Module; 6-191 (3.1L)
- REGAL 97: Electronic Control Module; (6-231, 3.8L), w/o supercharged option
- SILHOUETTE 97: Electronic Control Module; (6-207, 3.4L)
- SKYLARK 97: Electronic Control Module; 6-191 (3.1L)
- TRANS SPORT 97: Electronic Control Module; (6-207, 3.4L)
- VENTURE 97: Electronic Control Module; (6-207, 3.4L)
Don’t let a faulty computer keep your car off the road. Order this pre-programmed 1997 Bonneville PCM today and restore the reliable performance you depend on.
Frequently Asked Questions
What is a PCM?
The Powertrain Control Module (PCM), also known as an Engine Control Module (ECM), is your vehicle’s main computer. It controls all aspects of engine and transmission function to ensure optimal performance, fuel economy, and emissions.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is specific to your exact vehicle.
Is this part difficult to install?
For most DIY mechanics, the physical installation is simple. It involves disconnecting the battery, unplugging the old module, and plugging in the new one. The only additional step is a security relearn procedure, which involves a series of key cycles and can be done without any special tools.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, this part will resolve the issue. However, the check engine light can be triggered by many other failing components. It is always best to have your vehicle scanned for diagnostic trouble codes (DTCs) to help pinpoint the problem.
What is the security relearn procedure?
This procedure syncs the new PCM with your vehicle’s anti-theft system. For most 90s GM vehicles, it involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. Specific instructions for your vehicle will be provided.
Do I need to send my old PCM back?
No, there is no core charge or need to return your old module. You can keep it or dispose of it responsibly.