Is Your 1998 Buick Regal Experiencing Engine Troubles?
If your 1998 Buick Regal, or another compatible GM vehicle, is suffering from issues like erratic idling, stalling, poor fuel economy, or a persistent Check Engine Light, a failing Powertrain Control Module (PCM) is a very likely culprit. The PCM is the central computer of your vehicle, orchestrating critical functions like fuel injection, ignition timing, and transmission shifting. When it begins to fail, it can cause a cascade of frustrating and seemingly unrelated problems, making your car unreliable and difficult to drive.
This isn’t just a replacement part; it’s a direct solution to restore your vehicle’s original performance and reliability. We provide a high-quality Powertrain Control Module that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This ensures perfect compatibility and function, right out of the box. No need for expensive trips to the dealership for programming—we handle it all before we ship.
From the Diagnostic Bay
We had a 1998 Pontiac Grand Prix with the 3.8L V6 come into the shop, and the owner was at his wit’s end. The car would randomly stall at stoplights, the transmission would shift harshly, and it threw intermittent codes for the mass airflow sensor and an oxygen sensor, both of which had already been replaced. After hours of chasing electrical gremlins, we hooked up our scope to the PCM’s main connectors. We found that the 5-volt reference signal, which powers many of the engine’s sensors, was fluctuating wildly. This wasn’t a bad sensor; it was a failing power regulator inside the PCM itself. We installed a VIN-programmed module, performed the security relearn, and the car ran like it just rolled off the assembly line. All the ghost codes vanished, and the stalling and shifting issues were completely resolved. It’s a classic example of how a single failing computer can mimic a dozen other problems.
Common Symptoms of a Failing GM PCM
- ✔️ Check Engine Light is on with various communication or sensor codes (e.g., U-codes, P0601-P0606).
- ✔️ Engine stalls, misfires, or runs rough for no apparent reason.
- ✔️ Harsh or erratic automatic transmission shifting.
- ✔️ Noticeable decrease in fuel economy.
- ✔️ The vehicle fails to start, or starts and then immediately shuts off.
- ✔️ Issues with anti-theft system engagement, preventing the car from starting.
- ✔️ Inconsistent signals to other modules, causing strange behavior in gauges or accessories.
Why Choose Our Programmed 1998 Regal PCM?
Getting your vehicle back on the road shouldn’t be a complicated process. Our streamlined service is designed to provide a reliable, plug-and-play solution. When you order this 1998 Regal PCM, you are getting a module that has been meticulously prepared for your exact car. We flash it with the latest GM-certified software updates, which can often resolve factory bugs and improve overall engine and transmission performance. Simply provide us with your VIN during checkout, and our technicians will handle the rest. The module you receive will be ready for installation, saving you time and money.
Simple Installation Process
Installation is straightforward for most DIY mechanics. The PCM is typically located in the engine bay or under the dashboard. After disconnecting the battery, you simply unplug the old module’s wiring harnesses, unbolt it, and install the new one in its place. Once the new module is connected and the battery is reconnected, you may need to perform a simple security relearn procedure (often called a ‘key-on/key-off’ cycle), which can be done without any special tools and takes about 30 minutes. Instructions for this procedure are widely available online for your specific model.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM vehicles from the late 1990s. It is compatible with the following service numbers: 09356741, 16236757, 9357034, 9357440, 9366314. Please verify that this module fits your vehicle using the list below:
- 1998-1999 CUTLASS
- 1998-1999 GRAND AM (3.1L, 3.4L)
- 1998 LESABRE (3.8L)
- 1998 PARK AVENUE (3.8L)
- 1998 VENTURE (3.4L)
- 1999 ALERO (3.4L)
- 1998 RIVIERA (3.8L)
- 1998 CENTURY (3.1L)
- 1998 SKYLARK (3.1L)
- 1998 GRAND PRIX
- 1998 ACHIEVA (3.1L)
- 1998 EIGHTY EIGHT
- 1998 SILHOUETTE
- 1998 FIREBIRD (3.8L)
- 1998 MALIBU (3.1L)
- 1998 INTRIGUE
- 1998 LUMINA CAR
- 1998 BONNEVILLE
- 1998 CAMARO (3.8L)
- 1998 MONTE CARLO
- 1998 REGAL
- 1998 TRANS SPORT
Don’t let a faulty computer keep your car off the road. Order your pre-programmed 1998 Regal PCM today and restore the smooth, reliable performance you expect from your vehicle.
Frequently Asked Questions
Do I need to do anything after installing this PCM?
In most cases, you will need to perform a security relearn procedure. This syncs the new PCM with your vehicle’s anti-theft system and keys. It’s a simple process that typically involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. A Crankshaft Variation Relearn (CASE relearn) may also be necessary with a scan tool for optimal performance, though the car will run without it.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship the module until we have this information. Please ensure it is accurate to avoid any compatibility issues.
Is this a brand new part?
This is a quality, tested component that has been restored to full functionality. Each unit is rigorously inspected and then programmed with the latest GM software for your specific vehicle, ensuring reliable performance.
What if my part number is not on the list?
The service numbers listed (09356741, 16236757, etc.) are the most common, but this module may supersede other numbers as well. As long as your vehicle’s year, make, and model are on our compatibility list, this module will be the correct one once programmed to your VIN.
Will this fix my transmission shifting problems?
The PCM controls both the engine and the transmission. If your shifting problems are caused by faulty electronic signals from the computer, then replacing the PCM will resolve them. However, it will not fix internal mechanical failures within the transmission itself.