Restore Your Vehicle’s Core Performance and Reliability
Is your 1998 Buick Century or another compatible GM vehicle suffering from frustrating issues like intermittent stalling, a persistent Check Engine Light, or a complete no-start condition? The Powertrain Control Module (PCM) is the central computer of your vehicle, managing everything from fuel delivery and spark timing to transmission shifting. When it fails, the symptoms can be unpredictable and difficult to diagnose. This replacement PCM, part number 09356741, is the definitive solution to restore your car’s original performance and dependability.
We take the guesswork and high cost out of the repair process. Unlike a generic module from a salvage yard, each unit we ship is meticulously programmed with the latest official GM software updates. By providing your Vehicle Identification Number (VIN) at checkout, you receive a module that is precisely calibrated for your car’s specific engine, transmission, and options. This ensures seamless communication between all vehicle systems and resolves software-related bugs that may have been present in the original factory programming. Getting a pre-programmed 1998 Century Powertrain Module means you can avoid a costly trip to the dealership for programming.
A Technician’s Notebook: The Ghost in the Machine
I remember a 1998 Buick LeSabre that came into my shop with a problem that had stumped two other mechanics. The owner complained of random stalling at traffic lights and a harsh 1-2 shift, but the Check Engine Light wasn’t always on. When I scanned it, I found a stored P0601 (Internal Control Module Memory Check Sum Error) code. This code is a dead giveaway for internal PCM failure. We installed one of these VIN-programmed modules, performed the simple security relearn, and the car ran perfectly. The customer was thrilled to have his reliable car back without the massive dealership bill.
Common Signs of a Failing PCM
If you’re experiencing any of the following, a faulty PCM could be the culprit. A failing module can often mimic other issues, so confirming these symptoms is a key diagnostic step.
- ✔ Check Engine Light is illuminated with codes like P0601, P0602, P0606, or U-series communication codes.
- ✔ The engine cranks but will not start.
- ✔ Unexplained drops in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The engine misfires, stumbles, or stalls unexpectedly.
- ✔ Failure to pass an emissions test.
A Straightforward Guide to Installation
Installing your new 1998 Century Powertrain Module is a manageable job for a DIYer with basic tools. Following these steps ensures a safe and successful replacement.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the PCM: On most of these GM vehicles, the PCM is located in the engine bay, often inside the air filter housing or mounted to the firewall. Consult a repair manual for your specific model if you’re unsure.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. These connectors have locking tabs; do not force them. Inspect the terminals for any corrosion or damage.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed PCM in the same location. Securely reconnect the wiring harnesses, ensuring they click into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Security Relearn: You will need to perform a simple security relearn procedure (often called a Passlock or VATS relearn) so the vehicle recognizes the new PCM. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions are readily available online for your specific model.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM vehicles. Please verify your model and engine options below. This part replaces service numbers: 09356741, 16236757, 9357034, 9357440, 9366314.
ALERO 99 (3.4L, ID 16236757, 9356741, 9357034, 9347440, 9357440)
BONNEVILLE 98
CAMARO 98 (6-231, 3.8L)
CENTURY 98 (6-191, 3.1L)
CUTLASS 98
CUTLASS 99 (ID 16236757)
EIGHTY EIGHT 98
FIREBIRD 98 (6-231, 3.8L)
GRAND AM 98 (6-191, 3.1L)
GRAND AM 99 (3.4L, ID 16236757, 9356741, 9366314, 9357034, 9347440)
GRAND PRIX 98
INTRIGUE 98
LESABRE 98 (6-231, 3.8L)
LUMINA CAR 98
MALIBU 98 (6-191, 3.1L)
MONTE CARLO 98
PARK AVENUE 98 (6-231, 3.8L)
REGAL 98
RIVIERA 98 (6-231, 3.8L)
SILHOUETTE 98
SKYLARK 98 (6-191, 3.1L)
TRANS SPORT 98
VENTURE 98 (6-207, 3.4L)
Frequently Asked Questions
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the module with the exact software and calibrations for your car’s engine, transmission, and factory options. This ensures perfect compatibility and performance right out of the box.
Is this part difficult to install?
Installation is straightforward for most DIYers. It involves disconnecting the battery, swapping the module, and performing a simple security relearn procedure that requires no special tools. Our installation guide above provides the key steps.
Will this fix my car’s specific problem?
This module is designed to correct issues directly caused by a failing PCM, such as no-start conditions, erratic behavior, and specific internal error codes (like P0601). While it resolves many common problems, you should always ensure your vehicle has been properly diagnosed.
What is a “security relearn”?
It’s a simple, non-technical procedure that syncs the new PCM with your vehicle’s anti-theft system. It usually involves leaving the ignition key in the ‘ON’ position for about 10-15 minutes. This must be done after installation for the engine to start.
Is this better than a junkyard part?
Absolutely. A junkyard module will not be programmed for your VIN, may have the same faults as your original, and carries no warranty. Our modules are tested, guaranteed, and programmed with the latest GM software for your specific vehicle, providing a reliable, long-term fix.