Restore Peak Performance to Your GM Vehicle
Is your 1998-1999 Oldsmobile Cutlass, or another compatible GM vehicle, suffering from frustrating and unpredictable engine problems? A faulty Powertrain Control Module (PCM) is often the culprit behind issues like poor fuel economy, rough idling, stalling, or a persistent check engine light. This replacement PCM, part number 9357440, is the definitive solution to get your vehicle running reliably again. It serves as the central computer for your engine and transmission, and a properly functioning unit is critical for performance, efficiency, and emissions compliance.
Expert Pro Tip
Before replacing your PCM, always verify your vehicle’s battery is fully charged and the terminals are clean and tight. Also, inspect the main engine ground straps for corrosion or damage. A weak electrical foundation can often mimic the symptoms of a failed PCM, so confirming these basic elements can save you time and money.
Common Symptoms of a Failing PCM
If you’re experiencing any of the following issues, your PCM may be at the end of its service life. A failing module can manifest in various ways, from minor annoyances to a complete no-start condition.
- ✔ Persistent Check Engine Light (CEL) with various trouble codes
- ✔ Engine stalling or shutting off while driving
- ✔ Rough or erratic idling
- ✔ Noticeable decrease in fuel mileage
- ✔ Harsh or incorrect automatic transmission shifting
- ✔ Failure to pass an emissions test
- ✔ Complete no-start condition where the engine cranks but won’t fire
Your Solution: A Plug-and-Play 1998-1999 Cutlass PCM
Replacing the PCM on these late-90s GM vehicles isn’t just about swapping hardware. The module must be correctly programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures compatibility with your engine’s sensors, fuel injectors, and, most importantly, the anti-theft system (VATS/Passlock). We handle this entire process for you. Simply provide your VIN after purchase, and our technicians will flash the module with the latest GM-certified software updates. This ensures your new PCM is a true plug-and-play solution, ready for installation right out of the box with no additional dealer visits required.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM vehicles from the 1998-1999 model years. It is compatible with multiple service numbers, including 09356741, 16236757, 9356741, 9357034, 9357440, and 9366314. It fits models such as the Buick LeSabre, Pontiac Grand Am, Chevrolet Malibu, and many more, making it a versatile and reliable fix for numerous popular cars and vans of the era.
Frequently Asked Questions
Do I need to have this PCM programmed?
No. We program the module to your vehicle’s specific VIN before shipping it to you. It will arrive ready to install, requiring no further programming or trips to a dealership.
What is a VIN and why do you need it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your car. We use it to load the exact software and calibrations your vehicle requires, including settings for the engine, transmission, and anti-theft system. This ensures perfect compatibility.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this part will resolve the issue. However, the light can be triggered by many other components. It’s always best to have the diagnostic trouble codes read to help pinpoint the problem.
Where is the PCM located on my vehicle?
The location varies by model. On many GM vehicles from this era, the PCM is located in the engine compartment, often inside the air filter box assembly for protection. On others, it may be found under the dashboard on the passenger side. We recommend consulting a repair manual for your specific vehicle.
Is any special procedure needed after installation?
In most cases, no. Because the unit is pre-programmed, you can typically just install it and start the vehicle. However, some vehicles may require a security relearn procedure, which is a simple process that can be done without special tools. Instructions are widely available online for specific models.