Restore Peak Performance to Your Vehicle
Is your 1998 Buick Skylark, or another compatible GM vehicle, suffering from perplexing issues like poor fuel economy, erratic shifting, a check engine light that won’t go away, or even a no-start condition? The heart of your vehicle’s engine management system, the Powertrain Control Module (PCM), could be the culprit. This vital component acts as the central computer, orchestrating everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, the symptoms can be widespread and frustrating. This replacement PCM, service number 9357034, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We had a 1998 Pontiac Grand Am come into the shop with a complaint of harsh, unpredictable shifting and a check engine light for a transmission solenoid code. The customer had already replaced the solenoid pack twice with no change. After hours of chasing wires, we hooked up our high-level scan tool and monitored the data stream from the PCM. We noticed the PCM was commanding erratic line pressure, causing the harsh shifts, and falsely flagging the new solenoids. The root cause wasn’t the transmission at all; it was a failing driver circuit inside the original PCM. Installing a correctly programmed module like this one solved the ‘transmission’ problem instantly, saving the customer from a costly and unnecessary transmission rebuild.
Why Choose a VIN-Programmed 1998 Skylark Powertrain Control Module?
A generic, off-the-shelf module simply won’t work. Modern vehicles are complex, and the PCM must be specifically calibrated for your car’s unique configuration, including its engine, transmission, and factory options. Our process ensures a seamless installation. When you purchase this module, we will use the Vehicle Identification Number (VIN) you provide to flash it with the latest, most up-to-date software directly from GM. This critical step ensures that the module communicates perfectly with all other systems in your vehicle, eliminating compatibility issues and ensuring optimal performance from day one. This is not just a replacement; it’s a restoration of your vehicle’s electronic DNA.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various codes
- ✔ Vehicle refuses to start or stalls intermittently
- ✔ Poor engine performance, hesitation, or misfires
- ✔ Decreased fuel efficiency
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Failure to pass emissions testing
- ✔ Communication errors with diagnostic scan tools
Simple Installation Process
This module is a direct-fit replacement for the original unit. Once you receive your pre-programmed 1998 Skylark Powertrain Control Module, the physical installation is straightforward. In many cases, you may need to perform a security relearn procedure (often called VATS or Passlock) which can typically be done without special tools and takes about 30 minutes. Instructions for this procedure are widely available. For some vehicles, a Crankshaft Variation Relearn (CASE Relearn) may be necessary, which requires a capable scan tool. This ensures the PCM accurately reads the crankshaft position sensor for precise ignition timing. Getting your vehicle back to factory-spec operation has never been easier.
Guaranteed Compatibility
This module, part number 9357034, is a direct replacement for a wide range of GM vehicles from the late 1990s. It is compatible with multiple service numbers, including 09356741, 16236757, 9356741, 9357440, and 9366314. By providing your VIN, you guarantee that you will receive a module that is 100% correct for your specific application, taking all the guesswork out of the repair. Don’t let a faulty computer keep you off the road. Order your pre-programmed 1998 Skylark Powertrain Control Module today and restore the smooth, reliable performance you expect from your vehicle.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will receive an email with instructions on how to send us your vehicle’s 17-digit VIN. You can also add it as a note during the checkout process. We cannot program and ship your module without it.
Is this a plug-and-play part?
Because we program it to your VIN, it is nearly plug-and-play. However, you will likely need to perform a security relearn procedure, which pairs the module to your vehicle’s anti-theft system. This procedure can usually be done at home without special tools.
Will this fix my specific problem?
This module will correct issues directly caused by a faulty PCM. While the symptoms listed are common indicators of PCM failure, it’s essential to have your vehicle properly diagnosed by a qualified technician to rule out other potential causes like bad sensors or wiring issues.
What if I have a different service number on my original part?
This module replaces several service numbers, including 09356741, 16236757, 9357440, and others listed. As long as your vehicle model and year are on the compatibility list, providing your VIN will ensure we program this module correctly for your application, even if the number on your old part is different.
Do I need to send my old module back?
No core charge or return is required for this part. You can keep or responsibly dispose of your old module.