Restore Your Vehicle’s Performance and Reliability
Is your 1998 Buick Skylark or other GM vehicle suffering from frustrating issues like a persistent check engine light, poor fuel economy, erratic shifting, or even a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your engine and transmission. Don’t let a faulty module keep you off the road. This replacement PCM is the straightforward, reliable solution to bring your car back to life, restoring the smooth performance and dependability you count on.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, this module is your definitive fix:
- Stalling, stumbling, or hesitation during acceleration
- Rough or inconsistent idling
- Reduced power and poor fuel mileage
- Harsh or delayed automatic transmission shifts
- Illuminated Check Engine Light with communication codes (e.g., U-codes) or various sensor codes
- The vehicle cranks but will not start
By replacing your old unit with this pre-programmed 1998 Buick Skylark PCM 9357034, you are directly addressing the root cause of these electronic issues and providing a stable foundation for your vehicle’s entire powertrain system.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash the module with the latest GM software updates using your specific Vehicle Identification Number. This ensures perfect compatibility and eliminates the need for an expensive programming session at a dealership.
- ✔ True Plug-and-Play Installation: Because it arrives programmed, you can install it yourself or have your mechanic perform a simple swap. No special tools or computers are required for the installation process.
- ✔ Restores Factory Operation: This module is designed to restore the precise fuel delivery, ignition timing, and transmission shift points your vehicle had when it was new, improving both performance and efficiency.
- ✔ Direct-Fit OE Replacement: Engineered to match the original factory specifications for a perfect fit and seamless connection with your existing wiring harnesses.
- ✔ Rigorously Inspected: Each module undergoes a thorough inspection and testing process to ensure it functions correctly and provides long-lasting reliability.
- ✔ This unit is backed by our one-year replacement warranty. Your purchase is protected, giving you confidence and peace of mind.
Expert Insight: The Critical Role of VIN Programming
As a technician with over two decades of experience, I’ve seen countless drivers waste time and money on generic, non-programmed modules. For these late-90s GM vehicles, the PCM is deeply integrated with the anti-theft system (Passlock/VATS) and transmission controls. Installing a module that isn’t programmed to your specific VIN will almost always result in a no-start condition or severe transmission shifting problems. Our process of programming the 1998 Buick Skylark PCM 9357034 before it leaves our facility ensures that it communicates perfectly with all the other modules in your car from the moment you connect it, saving you from frustrating complications.
Frequently Asked Questions
Do I need to do any programming after I receive it?
No. This PCM arrives 100% ready to be installed. We program it with your vehicle’s VIN and the latest GM software updates before we ship it, making it a true plug-and-play part. In some cases, a simple crankshaft position sensor relearn procedure may be needed after installation, which can be done by most repair shops.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the part until we receive your VIN, as the programming is a required step.
Will this fix my specific problem or check engine light?
This PCM is a direct solution for issues caused by a faulty engine computer. While it resolves a wide range of common symptoms and codes, it’s essential to ensure your vehicle’s problem has been properly diagnosed. This module will not fix issues caused by other failed components like bad sensors, faulty wiring, or mechanical problems.
Where is the PCM located on my 1998 Buick Skylark?
On most compatible GM vehicles from this era, including the 1998 Skylark, the PCM is located inside the vehicle, typically behind the passenger side of the dashboard or near the center console area. Always disconnect the battery before attempting to remove or install the module.
Is this compatible with other GM models?
Yes. While this listing is for a 1998 Buick Skylark PCM 9357034, this module and our programming service are compatible with a wide range of 1998-1999 GM vehicles. Please see the detailed compatibility list on this page to confirm it fits your specific make, model, and engine.