Restore Your Buick’s Smooth, Reliable Performance
Is your 1998 Buick LeSabre running rough, shifting erratically, or showing a persistent Check Engine Light? A failing Powertrain Control Module (PCM) is often the culprit behind these frustrating and unpredictable issues. Don’t let a faulty computer keep your dependable sedan off the road. This PCM is the straightforward, reliable solution to restore your vehicle’s factory performance and get you driving with confidence again.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing PCM is the likely cause. This pre-programmed module is designed to be the definitive fix for:
- Erratic or harsh transmission shifting
- Poor fuel economy
- Engine stalling, stumbling, or misfiring (e.g., P0300-P0306 codes)
- Failure to pass emissions testing
- No-start or hard-start conditions
- Illuminated Check Engine Light with various communication or sensor codes
By replacing your old unit with this professionally programmed 1998 Buick LeSabre PCM, you are directly addressing the core of these problems, not just masking symptoms.
Features & Benefits
- ✔ Arrives Programmed to Your VIN: We flash the module with the latest GM software updates using your vehicle’s specific VIN. This ensures perfect compatibility and function right out of the box.
- ✔ True Plug-and-Play Installation: Because the programming is done for you, you can avoid a costly and time-consuming trip to the dealership. In most cases, installation is simple and requires only basic hand tools.
- ✔ Restores Peak Performance & Efficiency: With updated software and correct vehicle parameters, your engine and transmission will operate precisely as the manufacturer intended, restoring lost power and fuel economy.
- ✔ Direct-Fit OE Replacement: This unit is a direct replacement for service numbers 09356741, 16236757, 9357034, 9357440, and 9366314, guaranteeing a perfect fit and connection.
- ✔ One-Year Warranty: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
As a technician, I’ve seen countless drivers try to save a few dollars by installing a used PCM from a junkyard. The problem is, that module is programmed for a different vehicle. It won’t have the correct engine calibrations, transmission strategy, or anti-theft data. This leads to immediate running problems or a no-start condition. Our VIN programming service isn’t just a convenience; it’s the essential step that makes this a true, reliable repair. We ensure the ‘brain’ we send you is a perfect match for your car’s ‘body’.
Stop guessing and start solving. A properly functioning computer is essential for your vehicle’s health and your peace of mind. This programmed 1998 Buick LeSabre PCM is the most effective way to get your car running right. After you complete your purchase, simply provide us with your VIN, and we’ll handle the rest. We are committed to providing a quality part that makes your repair process as simple as possible. Order your 1998 Buick LeSabre PCM today!
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the essential programming before the part is shipped. It will arrive flashed with the latest GM software and coded to the VIN you provide, making it ready for installation.
What about my vehicle’s anti-theft system?
GM vehicles of this era often use a Passlock or VATS security system. After installing the new PCM, you will likely need to perform a simple security relearn procedure, which typically involves turning the key on and off in a specific sequence. This procedure takes about 30 minutes and does not require any special tools.
Where do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as it is required for the programming service.
Is this a brand new part?
This is a high-quality, genuine OE (Original Equipment) component that has been thoroughly inspected and tested to ensure it meets or exceeds factory specifications. We then program it specifically for your vehicle.
How do I know for sure that my PCM is the problem?
While the symptoms listed are strong indicators, it’s always best to have a proper diagnosis performed by a qualified mechanic. Common diagnostic steps include checking all power and ground connections to the PCM, testing sensor inputs, and scanning for specific communication-related trouble codes (U-codes).
Will this fit other GM cars from 1998?
Yes, this specific PCM is compatible with a wide range of 1998-1999 GM vehicles, including the Grand Prix, Century, Regal, Monte Carlo, Lumina, and more, as detailed in the full fitment list. The key is to match the service number from your original unit.