Is Your 1998 Buick Park Avenue Running Rough?
If you’re dealing with a persistent check engine light, erratic engine performance, transmission shifting problems, or even a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. In my 20+ years as a technician, I’ve seen countless GM vehicles from this era exhibit these exact symptoms. The PCM is the brain of your vehicle, and when it falters, the entire system suffers. This isn’t just an annoyance; it’s a reliability issue that can leave you stranded.
The Direct Solution: A VIN-Programmed 1998 Park Avenue PCM
Forget expensive dealership visits and the hassle of finding a local shop with the right equipment. We provide a straightforward, effective solution. This replacement PCM, part number 9357034, is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. We load the latest GM-certified software, ensuring optimal performance and compatibility right out of the box.
- โ Eliminate Guesswork: Solves common issues like false sensor codes, poor fuel economy, and harsh shifting.
- โ Save Time & Money: Arrives ready for installation, completely bypassing the need for dealer programming.
- โ Latest Software: Programmed with the newest GM updates for improved driveability and efficiency.
- โ Guaranteed Compatibility: We use your VIN to ensure this module is a perfect match for your Park Avenue’s systems.
Expert Pro Tip from a 20-Year Tech: A common misdiagnosis on these 3.8L engines is to replace the Crankshaft Position Sensor (CKP) for a no-start or stalling issue. While the CKP can fail, I’ve often seen the PCM itself be the root cause. Before ordering, check for a consistent spark and injector pulse. If both are weak or absent, and the sensor wiring is good, the PCM driver circuits are the most likely failure point. This module directly corrects that internal fault.
Plug-and-Play Installation: Get Back on the Road Fast
Installing your new PCM is a job most DIYers can handle in under an hour with basic tools. No complex procedures are required.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts.
- Locate the PCM: On most 1998 Park Avenues, the PCM is located inside the air filter housing assembly in the engine bay. You’ll need to remove the air filter cover to access it.
- Disconnect Connectors: Carefully unclip the electrical wiring harnesses from the old module. Inspect the pins on the harness side for any green corrosion or damage and clean them if necessary.
- Swap the Modules: Remove the mounting bolts holding the old PCM in place. Install the new module and secure it with the same bolts.
- Reconnect & Finalize: Firmly plug the wiring harnesses into your new PCM. Re-assemble the air filter housing and reconnect the negative battery terminal. The vehicle is now ready to start.
Cross-Reference & Fitment Information
This module is a direct replacement for a wide range of GM vehicles from this era and is compatible with several service numbers. Please verify your part number or contact us with your VIN if you are unsure.
Replaces Service Numbers: 09356741, 16236757, 9356741, 9357034, 9357440, 9366314
Fits a wide variety of 1998-1999 GM Models including: Buick LeSabre, Regal, Riviera; Chevrolet Camaro, Lumina, Malibu, Monte Carlo; Oldsmobile Achieva, Alero, Cutlass, Eighty Eight, Intrigue, Silhouette; Pontiac Bonneville, Firebird, Grand Am, Grand Prix, Trans Sport; and Chevrolet/Pontiac Venture/Trans Sport vans. Proper function is dependent on the correct VIN programming, which we handle for you.