Is Your 1998 Skylark Running Rough, Stalling, or Showing a Check Engine Light?
If you’re dealing with frustrating engine problems like erratic idling, poor fuel economy, harsh shifting, or a persistent check engine light, a failing Powertrain Control Module (PCM) is often the culprit. In my 20+ years as a technician, I’ve seen these exact issues on countless GM vehicles from this era. The PCM is the brain of your vehicle, and when it starts to fail, it can cause a cascade of confusing and seemingly unrelated problems. Don’t let a faulty computer keep your reliable Skylark off the road.
The Direct-Fit Solution: Programmed and Ready for Installation
This isn’t just a replacement part; it’s a complete solution. We are providing a genuine OEM Powertrain Control Module that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates perfectly with your engine, transmission, and all related systems, restoring original performance and efficiency. We load the latest GM-certified software, which often corrects drivability issues that were present even when the car was newer.
Expert Pro Tip from a 20-Year Veteran Mechanic
Before you install your new PCM, take five minutes to inspect the main wiring harness connectors. On these 90s GM vehicles, the plastic conduit can become brittle, exposing wires. Look for any signs of green corrosion on the pins or chafed insulation where the harness might rub against the engine or chassis. Cleaning the connector pins with a dedicated contact cleaner and ensuring the harness is secure can prevent intermittent connection problems that are often misdiagnosed as a bad module.
Symptoms of a Failing 1998 Skylark Powertrain Control Module
A bad PCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Check Engine Light is on with various trouble codes
- ✔ Vehicle fails to start or stalls intermittently
- ✔ Noticeable decrease in fuel mileage
- ✔ Transmission shifts poorly, late, or harshly
- ✔ Engine hesitates or misfires during acceleration
- ✔ Communication errors with diagnostic scan tools
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest advantages of our service is that this module arrives ready to install. Since we handle the programming, you can avoid a costly trip to the dealership and the hassle of having the vehicle towed. The installation is straightforward for a DIYer with basic tools.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On the 1998 Skylark, the PCM is typically found in the engine bay, often inside the air filter housing for protection.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module.
- Remove Old Module: Unbolt the old PCM from its mounting bracket.
- Install New Module: Bolt the new, pre-programmed PCM into place and securely reconnect the wiring harnesses.
- Reconnect Battery: Reattach the negative battery terminal. Your vehicle is now ready to start.
Guaranteed Compatibility
This module, part number 9356741, is a direct replacement for a wide range of GM vehicles. It is fully compatible with the following service numbers, ensuring it will function correctly if your original module carries any of these IDs:
Compatible Service Numbers: 09356741, 16236757, 9357034, 9357440, 9366314
This part is verified to fit a large number of 1998-1999 GM cars, including the Buick Century, LeSabre, Park Avenue, and Regal; the Chevrolet Camaro, Lumina, Malibu, and Monte Carlo; the Oldsmobile Achieva, Alero, Cutlass, Eighty Eight, Intrigue, and Silhouette; and the Pontiac Bonneville, Firebird, Grand Am, Grand Prix, and Trans Sport. After your purchase, simply provide us with your VIN, and we’ll handle the rest, ensuring you receive a part that is perfectly matched to your car’s factory specifications.