Is Your GM Vehicle Running Rough? Get the Right Fix, Guaranteed.
If you’re dealing with frustrating issues like a persistent check engine light, poor fuel economy, erratic shifting, or even a no-start condition in your 1998-1999 GM car or minivan, a failing Powertrain Control Module (PCM) is the likely culprit. Don’t let a faulty computer keep you off the road. This replacement engine control module is the definitive, reliable solution to restore your vehicle’s performance and get it running like new again.
Common Symptoms of a Failing PCM & Your Solution
A vehicle’s PCM is its brain, controlling everything from fuel mixture and spark timing to transmission shift points. When it fails, the symptoms can be unpredictable and confusing. You might be experiencing:
- Unexplained Check Engine Lights (CEL)
- Poor engine performance, hesitation, or stalling
- Reduced fuel mileage
- Harsh or incorrect automatic transmission shifting
- Failure to pass emissions testing
- Complete engine shutdown or inability to start
This unit is the solution. We take a quality, tested module and program it specifically to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that all factory settings, security information, and specific options for your car are perfectly matched, making installation straightforward. The 1998 GM PCM 9356741 is the correct part to solve these complex electronic issues and restore peace of mind.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: Arrives ready to install, flashed with the latest GM software updates for your specific car. No extra trips to the dealer needed.
- โ Restores Original Performance: Eliminates drivability problems caused by a faulty computer, restoring smooth operation and fuel efficiency.
- โ Direct-Fit Replacement: Designed to replace the original factory unit perfectly, ensuring all connectors and mounting points line up without modification.
- โ Broad Compatibility: A single, reliable solution for a wide range of 1998-1999 GM vehicles, including models from Buick, Chevrolet, Oldsmobile, and Pontiac.
- โ Cost-Effective Repair: A smart alternative to expensive dealership parts, providing the same reliability and function without the high price tag.
- โ This unit is backed by our one-year replacement warranty.
A Technician’s Take: Why VIN Programming is Non-Negotiable
“Back in the late 90s, GM’s vehicle electronics got a lot more integrated. The PCM didn’t just run the engine; it talked to the transmission, the anti-lock brakes, and especially the anti-theft system (Pass-Key/VATS). Simply swapping a computer from another car won’t workโthe car won’t start because the security codes don’t match. Having the module pre-programmed to your VIN is the only way to ensure a true plug-and-play repair. It saves you from hours of diagnostic headaches and the need for specialized dealer tools. This isn’t just a convenience; it’s a necessity for a successful repair.”
Frequently Asked Questions
What information do I need to provide?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. We use this to program the module with the correct software and vehicle-specific settings before we ship it.
Is this part difficult to install?
For most models, the PCM is in an accessible location (often in the engine bay or under the dashboard). Since the unit arrives pre-programmed, installation is typically a matter of disconnecting the battery, unplugging the old module’s electrical connectors, swapping the hardware, and reconnecting everything. Some vehicles may require a simple security relearn procedure, which can be done without special tools and instructions are widely available online.
Will this fix my check engine light?
If the check engine light and associated fault codes are being caused by a faulty PCM, this part will resolve the issue. However, it’s always recommended to have a proper diagnosis performed to ensure the PCM is the root cause and not a separate sensor or wiring problem.
How do I confirm this is the right part number for my car?
The best way is to check the service number on your original module. This 1998 GM PCM 9356741 replaces a wide range of service numbers, including 09356741, 16236757, 9357034, and more. You can also use the compatibility list provided on this page to verify your make, model, and year.
What is the warranty on this computer?
This unit is backed by our one-year replacement warranty, giving you confidence in your purchase and the reliability of your repair.