Restore Peak Performance to Your GM Vehicle
If you’re dealing with frustrating engine problems in your 1998 Oldsmobile Intrigue—like a persistent check engine light, erratic transmission shifting, poor fuel mileage, or even a no-start condition—the root cause is often a failing Powertrain Control Module (PCM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty engine computer can create a cascade of hard-to-diagnose issues. This isn’t just a replacement part; it’s a complete, reliable solution designed to restore your vehicle’s factory performance and get you back on the road with confidence.
The biggest hurdle with PCM replacement has always been the programming. This module eliminates that problem entirely. We professionally flash this PCM with the latest official GM software updates, tailored specifically to your vehicle’s Vehicle Identification Number (VIN). This means it arrives at your door ready for installation, saving you a costly trip to the dealership and their expensive programming fees. It’s the most direct path to fixing your car right.
From the Diagnostic Bay: The Ghost in the Machine
I remember a 1998 Pontiac Grand Prix (which uses this exact PCM) that came into my shop with an intermittent stalling problem that had stumped two other mechanics. It would die at stoplights without warning and throw no consistent codes. After checking fuel pressure, spark, and sensors, everything seemed fine. On a hunch, I monitored the data stream for the PCM’s internal drivers and noticed the fuel pump relay driver would momentarily drop out. The PCM’s internal circuitry was failing under load. We installed a correctly programmed PCM, and the problem vanished instantly. It’s a classic example of how a failing 1998 Intrigue Powertrain Control Module can mimic a dozen other problems, making a quality, correctly programmed part the only true fix.
Is Your Vehicle Showing These Symptoms?
A failing PCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your engine computer needs attention:
- ✔ Unexplained Check Engine Light (CEL)
- ✔ Stored diagnostic trouble codes (DTCs) like P0601, P0602, or P0605
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Engine stalling, stuttering, or misfiring
- ✔ Complete no-start condition where the engine cranks but won’t fire
- ✔ Noticeable decrease in fuel economy
- ✔ Failure to communicate with a diagnostic scan tool
A Straightforward Guide to Installation
One of the key benefits of this module is its simple, DIY-friendly installation. Since the programming is already done, no special tools are required.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On most of these GM vehicles, the PCM is located in the engine compartment, often inside the air filter housing or mounted to the firewall.
- Disconnect Connectors: Carefully unplug the electrical harness connectors from the old module. There are typically release tabs that need to be pressed.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed PCM into place.
- Reconnect Everything: Securely plug the electrical connectors into the new module until they click. Reconnect the negative battery terminal.
- Perform Security Relearn (If Needed): Some GM vehicles may require a simple key-cycle security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your vehicle’s service information for specific steps.
Verified Vehicle Compatibility
This 1998 Intrigue Powertrain Control Module is a direct-fit replacement for a wide range of General Motors vehicles. Please verify your model and engine options below. This part is a compatible replacement for service numbers: 09356741, 16236757, 9356741, 9357034, 9357440, and 9366314.
ALERO 99 Electronic Control Module; (LH center dash), 3.4L, ID 16236757
ALERO 99 Electronic Control Module; (LH center dash), 3.4L, ID 9356741
ALERO 99 Electronic Control Module; (LH center dash), 3.4L, ID 9357440
BONNEVILLE 98 Electronic Control Module
CAMARO 98 Electronic Control Module; 6-231 (3.8L)
CENTURY 98 Electronic Control Module; (6-191, 3.1L)
CUTLASS 98 Electronic Control Module
CUTLASS 99 Electronic Control Module; (LH center dash), ID 16236757
EIGHTY EIGHT 98 Electronic Control Module
FIREBIRD 98 Electronic Control Module; 6-231 (3.8L)
GRAND AM 98 Electronic Control Module; 6-191 (3.1L)
GRAND AM 99 Electronic Control Module; (LH center dash), 3.4L, ID 16236757
GRAND AM 99 Electronic Control Module; (LH center dash), 3.4L, ID 9347440
GRAND AM 99 Electronic Control Module; (LH center dash), 3.4L, ID 9356741
GRAND AM 99 Electronic Control Module; (LH center dash), 3.4L, ID 9357034
GRAND AM 99 Electronic Control Module; (LH center dash), 3.4L, ID 9366314
GRAND PRIX 98 Electronic Control Module
INTRIGUE 98 Electronic Control Module
LESABRE 98 Electronic Control Module; (6-231, 3.8L)
LUMINA CAR 98 Electronic Control Module; (LH engine compartment)
MALIBU 98 Electronic Control Module; 6-191 (3.1L)
MONTE CARLO 98 Electronic Control Module
PARK AVENUE 98 Electronic Control Module; (6-231, 3.8L)
REGAL 98 Electronic Control Module
RIVIERA 98 Electronic Control Module; (6-231, 3.8L)
SILHOUETTE 98 Electronic Control Module; (LH engine compartment)
SKYLARK 98 Electronic Control Module; 6-191 (3.1L)
TRANS SPORT 98 Electronic Control Module; (LH engine compartment)
VENTURE 98 Electronic Control Module; (6-207, 3.4L)
Frequently Asked Questions
Why do you need my VIN?
Your VIN (Vehicle Identification Number) is essential because it allows us to load the exact, correct software from GM for your car’s specific engine, transmission, and options. This ensures perfect compatibility and performance, eliminating the need for you to have it programmed at a dealership.
Is this part difficult to install?
No, this is a great DIY project for most home mechanics. Since the programming is done beforehand, it’s a simple plug-and-play process of unbolting the old unit and installing the new one. Basic hand tools are all that’s required.
Will this fix my check engine light?
If the check engine light is caused by an internal PCM failure (like codes P0601-P0605) or a component driver controlled by the PCM, then yes, this will resolve the issue. It’s crucial to properly diagnose the cause of the light first, as it could also be a faulty sensor or wiring.
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. ECM stands for Engine Control Module, while PCM means Powertrain Control Module. A PCM is more comprehensive, as it typically controls both the engine and the automatic transmission functions, which is the case for this module.
Do I need to do a security relearn after installation?
On many GM vehicles of this era, a security relearn procedure is necessary for the vehicle to start. It’s a simple process that usually involves leaving the key in the ‘ON’ position for about 10 minutes to allow the PCM to sync with your vehicle’s anti-theft system.