Restore Your Vehicle’s Core Performance and Reliability
If you’re dealing with frustrating issues like engine stalling, erratic shifting, a persistent check engine light, or a no-start condition in your 1998 Buick Regal or other compatible GM vehicle, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer for your engine and transmission, its health is critical. This replacement PCM, part number 9366314, is the definitive, hassle-free solution to get your car running smoothly again.
The biggest challenge with replacing a PCM has always been the programming. In my 20+ years in the shop, I’ve seen countless DIYers and even professional mechanics get stuck at this step, forcing a costly trip to the dealership. We eliminate that problem entirely. Before this module ships, we flash it with the latest official GM software updates, precisely matched to your vehicle using the VIN you provide. This means it arrives at your door ready for a true plug-and-play installation, saving you time, money, and headaches.
A Technician’s Notebook: The Intermittent No-Start Nightmare
A few months back, a 1998 Pontiac Bonneville with the 3.8L V6 was towed to my bay. The owner was at his wit’s end. The car would run fine for days, then refuse to start for no apparent reason. It had no spark and no injector pulse, but only sometimes. All the basic sensors checked out. After hours of chasing wires, I hooked up a high-end scanner and monitored the PCM’s internal data stream. During a crank/no-start event, I saw the PCM’s processor was dropping out completely. It was a classic case of internal module failure, often caused by heat cycles and aging solder joints. We installed a correctly programmed PCM, and the car has been starting reliably ever since. This is why a quality, properly programmed module is non-negotiable.
Common Signs of a Failing PCM
A failing engine computer can cause a wide range of symptoms. If your vehicle is experiencing any of the following, a faulty PCM could be the reason:
- ✔ Check Engine Light (CEL) is illuminated, often with codes like P0601 (Internal Control Module Memory Check Sum Error)
- ✔ Engine stalls unexpectedly or struggles to start
- ✔ Noticeable decrease in fuel economy
- ✔ Transmission shifts harshly, late, or not at all
- ✔ The engine misfires or runs rough
- ✔ Failure to communicate with a diagnostic scan tool
A Straightforward Guide to Installation
Installing your new, pre-programmed PCM is a simple process that most DIYers can complete with basic hand tools. This is a general guide; exact location may vary by model.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: On most of these GM vehicles, the PCM is located inside the air filter box in the engine compartment. You may need to remove the air filter assembly to access it.
- Disconnect the Module: Carefully unplug the electrical connectors from the old PCM. There are typically release tabs that need to be pressed or lifted.
- Swap the Modules: Unbolt the old PCM from its mounting bracket and set it aside. Mount the new module in its place.
- Reconnect and Finalize: Securely plug the electrical connectors into your new PCM. You should hear a click as they lock in place. Reinstall the air filter assembly and reconnect the negative battery terminal.
- Perform Security Relearn (If Needed): Start the vehicle. In some cases, a simple 10-minute key-on/key-off security relearn procedure may be necessary. The engine is now ready to run with its new, updated programming.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 09356741, 16236757, 9357034, 9357440, and 9366314. It is guaranteed to fit the following models:
- 1998 Achieva (3.1L)
- 1999 Alero (3.4L – check ID)
- 1998 Bonneville
- 1998 Camaro (3.8L)
- 1998 Century (3.1L)
- 1998-1999 Cutlass
- 1998 Eighty Eight
- 1998 Firebird (3.8L)
- 1998-1999 Grand Am (3.1L, 3.4L – check ID)
- 1998 Grand Prix
- 1998 Intrigue
- 1998 LeSabre (3.8L)
- 1998 Lumina Car
- 1998 Malibu (3.1L)
- 1998 Monte Carlo
- 1998 Park Avenue (3.8L)
- 1998 Regal
- 1998 Riviera (3.8L)
- 1998 Silhouette
- 1998 Skylark (3.1L)
- 1998 Trans Sport
- 1998 Venture (3.4L)
Frequently Asked Questions
Do I need to get this programmed by a dealer?
No. This is the main benefit of our service. We program the module to your vehicle’s specific VIN before we ship it to you. It arrives ready to install, with no extra programming required.
What is a VIN and why do you need it?
The VIN is your vehicle’s unique 17-digit identification number. We use it to load the exact factory software and calibrations for your car’s specific engine, transmission, and options, ensuring perfect compatibility.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM (e.g., code P0601), then yes, this part will solve the issue. However, you should always diagnose the codes first to ensure the PCM is the actual problem and not a faulty sensor.
Where is the PCM located on my 1998 Regal?
On the 1998 Buick Regal and many similar GM platforms, the Powertrain Control Module is typically found inside the engine’s air cleaner assembly (the airbox) for protection and cooling.
Is this part difficult to install myself?
Not at all. With basic hand tools, most people can swap the module in under an hour. Since our module is pre-programmed, it’s a simple plug-and-play process. Just follow our installation guide above.