Restore Your Vehicle’s Brain and Get Back on the Road with Confidence
Is your GM vehicle acting erratically? Stalling, shifting poorly, or throwing a stubborn check engine light that won’t go away? The Powertrain Control Module (PCM) is the central computer of your engine and transmission, and when it starts to fail, it can cause a cascade of frustrating and hard-to-diagnose problems. This isn’t just an inconvenience; it’s a critical component failure that affects performance, fuel economy, and reliability. This listing is for a direct-fit, professionally programmed Powertrain Control Module, designed to restore your vehicle’s factory performance and get you driving smoothly again.
We take the guesswork and hassle out of the replacement process. Unlike a generic module from a salvage yard, this unit is flashed with the latest GM-approved software updates specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) after your purchase, and we’ll handle all the programming before it even ships. This means no expensive trips to the dealership and no need for specialized programming tools—a major benefit for both DIY mechanics and professional shops looking for an efficient solution. This is the definitive fix for a failing 1998 Regal Powertrain Control Module and many other compatible GM models.
From the Diagnostic Bay
I remember a 1998 Buick LeSabre that came into my shop with a complaint of intermittent stalling at stoplights and harsh 1-2 shifts. The owner had already replaced the spark plugs, wires, and even the mass airflow sensor with no luck. The check engine light was on, but the codes were inconsistent. After hooking up my scan tool and monitoring live data, I saw erratic readings from the throttle position sensor and transmission solenoids, but the sensors themselves tested fine. This is a classic sign of a failing PCM. The internal processors start to break down, sending faulty signals. We installed one of these VIN-programmed modules, and it was like night and day. The engine idled perfectly, shifts were smooth, and the customer was thrilled to have his reliable car back without wasting any more money on unnecessary parts.
Common Signs of a Failing PCM
- ✔ Check Engine Light is illuminated, often with internal module codes like P0601, P0602, or P0605.
- ✔ Your vehicle fails to start or stalls intermittently for no apparent reason.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ The automatic transmission shifts harshly, late, or gets stuck in one gear (limp mode).
- ✔ The engine runs rough, misfires, or hesitates during acceleration.
- ✔ Communication errors with diagnostic scan tools.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electronic component replacement.
- ✔ Locate the PCM: On most of these GM models, the PCM is located in the engine bay, often inside the air filter box assembly or mounted to the firewall. Consult a vehicle-specific repair manual if you are unsure.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors. There are typically release tabs that need to be pressed or lifted. Once disconnected, unbolt the old module from its mounting bracket and remove it.
- ✔ Install the New Module: Seat your new, pre-programmed PCM into the mounting bracket and secure it with the bolts. Reconnect the electrical harnesses, ensuring they click securely into place.
- ✔ Reconnect Power: Reattach the negative battery terminal. The vehicle is now ready to start. Since this 1998 Regal Powertrain Control Module is pre-programmed, no further steps are required.
Verified Vehicle Compatibility
This module is a direct replacement for service part number 16236757 and is also compatible with 09356741, 9357034, 9357440, and 9366314. It is guaranteed to fit the following vehicles:
- ACHIEVA 98 (3.1L)
- ALERO 99 (3.4L, various IDs)
- BONNEVILLE 98
- CAMARO 98 (3.8L)
- CENTURY 98 (3.1L)
- CUTLASS 98-99
- EIGHTY EIGHT 98
- FIREBIRD 98 (3.8L)
- GRAND AM 98-99 (3.1L, 3.4L)
- GRAND PRIX 98
- INTRIGUE 98
- LESABRE 98 (3.8L)
- LUMINA CAR 98
- MALIBU 98 (3.1L)
- MONTE CARLO 98
- PARK AVENUE 98 (3.8L)
- REGAL 98
- RIVIERA 98 (3.8L)
- SILHOUETTE 98
- SKYLARK 98 (3.1L)
- TRANS SPORT 98
- VENTURE 98 (3.4L)
Frequently Asked Questions About Your New PCM
Why do you need my car’s VIN?
Why do you need my car’s VIN?
Your VIN is essential because it allows us to load the exact, correct software for your vehicle’s specific options, engine, and transmission. This ensures perfect compatibility and function right out of the box, eliminating the need for you to visit a dealer for programming.
Is this part difficult to install for a DIYer?
Not at all. The physical replacement is straightforward, typically involving a few bolts and electrical connectors. Since we handle all the programming, the most difficult part of the job is already done for you. It’s a true plug-and-play solution.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the original PCM (common codes include P0601-P0606), then yes, this part is the correct fix. However, it’s always best to have the codes professionally diagnosed to ensure the PCM is the root cause and not a separate sensor or wiring issue.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part that has been professionally programmed with the latest software. This provides the reliability of an original factory part at a significant cost savings compared to a new dealer part.
Do I need to do any relearn procedures after installation?
In most cases, no. The module is programmed to your VIN and should function immediately. Some vehicles may benefit from a simple idle relearn procedure, which involves letting the car idle for a few minutes, but no special tools are required.