Is Your Late-90s GM Vehicle Running Rough?
If you’re dealing with a frustrating check engine light, erratic shifting, stalling, or a no-start condition in your 1998-1999 Oldsmobile Cutlass or another compatible GM model, the culprit is often a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, even minor internal faults can cause major drivability problems. In my 20+ years in the shop, I’ve seen these exact issues hundreds of times, leaving drivers stranded and confused.
From the Shop Floor: A Real-World Diagnosis
“A customer’s 1998 Pontiac Grand Prix came in last month with a classic heat-soak issue. It would run fine when cold, but after 20 minutes of driving, it would sputter and stall. After cooling down for an hour, it would start right back up. The owner had already replaced the fuel pump and ignition control module with no luck. We hooked up our diagnostic scanner and saw erratic data from the PCM once it reached operating temperature. A new, properly programmed PCM fixed it instantly. This is a textbook failure for these modules.”
The Direct Solution: A Reliable, Pre-Programmed PCM
Forget expensive dealership visits and the hassle of finding a shop that can program modules for older vehicles. This Powertrain Control Module is the straightforward, effective solution you need. We take the guesswork out of the repair by programming the unit specifically for your vehicle using your VIN. This ensures all communications between the engine, transmission, and other systems are restored to factory specifications with the latest GM software updates available.
Why Choose Our Programmed PCM?
- ✔ VIN-Specific Programming: We flash the module with your vehicle’s exact VIN, ensuring perfect compatibility right out of the box.
- ✔ Resolves Common Failures: Directly addresses issues like false trouble codes, poor fuel economy, harsh shifting, and intermittent stalling.
- ✔ No Dealer Required: This module is delivered to you ready for installation, saving you hundreds in dealership programming fees.
- ✔ Latest GM Software: We load the most current software from General Motors, which often includes fixes for issues the original software had.
Easy Installation for Your 1998-1999 Cutlass Powertrain Control Module
You don’t need to be a master mechanic to complete this job. With basic hand tools, you can get your car running smoothly again. The location can vary by model (often under the dash on the driver’s side or in the engine bay), so a quick search for your specific vehicle is recommended.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts.
- Locate the Old PCM: Find the existing module in your vehicle. It’s a metal box with several large electrical connectors.
- Swap the Modules: Carefully unplug the wiring harnesses and unbolt the old PCM. Secure the new module in its place and firmly reconnect all harnesses. Ensure the clips are fully seated.
- Reconnect and Start: Reattach the negative battery terminal. Your vehicle is now ready to start with its newly programmed PCM.
Guaranteed Fitment & Part Number Cross-Reference
This module is a direct replacement for a wide range of 1998 and 1999 General Motors vehicles. Please verify that your existing module carries one of the following service numbers to ensure compatibility:
Compatible Service Numbers: 09356741, 16236757, 9357034, 9357440, 9366314
After your purchase, simply provide us with your vehicle’s 17-digit VIN, and we’ll handle the rest. Restore your vehicle’s reliability and performance today.