Is Your GM Vehicle Running Rough?
If you’re dealing with frustrating issues like a persistent check engine light, erratic transmission shifting, a no-start condition, or random stalling, the heart of the problem is often a failing Powertrain Control Module (PCM). For many 1998 and 1999 GM vehicles, this module is the central computer, and when it falters, the entire vehicle’s performance suffers. In my 20+ years in the shop, I’ve seen these exact symptoms hundreds of times, leaving drivers stranded and confused. This isn’t just a part; it’s the solution to getting your car’s reliability back.
The Direct Solution: A VIN-Programmed 1998 Skylark PCM
This isn’t a generic, one-size-fits-all part. This is a replacement Powertrain Control Module for your 1998 Buick Skylark and other compatible GM models, identified by part number 16236757. The critical difference is our service: we flash the module with the latest GM-certified software using your vehicle’s specific VIN. This ensures that the fuel delivery, transmission shift points, and engine parameters are perfectly matched to your car’s original factory specifications, eliminating the guesswork and the need for an expensive trip to the dealership for programming.
Expert Pro Tip: Check Your Connectors First
Before you condemn your old PCM, take a moment to inspect the electrical harness connectors that plug into it. Over the decades, these connectors can accumulate dirt, moisture, and corrosion, leading to poor contact and symptoms that mimic a failed module. I’ve seen dozens of cases where simply cleaning the pins with a quality electronics cleaner and a small brush restored communication and solved the problem. It’s a 5-minute check that could save you time and money.
Why Choose This VIN-Programmed Module?
- ✔ Solves Common Failure Points: Directly addresses no-start conditions, harsh shifting, false sensor codes, and intermittent stalling.
- ✔ Plug-and-Play Installation: Because we program it to your VIN, no further flashing is required. Once installed, you may need to perform a simple security relearn procedure, which can be done without special tools.
- ✔ Latest GM Software: We load the most current calibrations from General Motors, which often include fixes for issues the original software had.
- ✔ Guaranteed Compatibility: A direct replacement for a wide range of service numbers, ensuring it’s the right part for your vehicle.
Simple, Straightforward Installation
Replacing the PCM is a job most DIY mechanics can handle. While the exact location varies by model (often in the engine bay or under the dash), the process is generally the same.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the Module: Find the existing PCM on your vehicle. On many models like the Silhouette or Lumina, it’s in the engine compartment. On others like the Grand Am or Alero, it’s under the driver’s side dash.
- Disconnect and Remove: Carefully unplug the electrical harness connectors. They have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed module into place. Reconnect the electrical harnesses, ensuring they click securely into place.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Security Relearn (If Needed): Turn the key to the ‘ON’ position for 10-15 minutes, then off, and repeat two more times. This allows the vehicle’s security system to recognize the new PCM. Then, start the engine.
Guaranteed Fitment for Your GM Vehicle
This module is the correct replacement for units with service numbers 09356741, 16236757, 9357034, 9357440, and 9366314. It is confirmed to fit the following vehicles, but please verify your part number or contact us with your VIN to be certain:
- Alero (1999) with 3.4L Engine
- Achieva (1998) with 3.1L Engine
- Bonneville (1998)
- Camaro (1998) with 3.8L Engine
- Century (1998) with 3.1L Engine
- Cutlass (1998-1999)
- Eighty Eight (1998)
- Firebird (1998) with 3.8L Engine
- Grand Am (1998-1999) with 3.1L or 3.4L Engine
- Grand Prix (1998)
- Intrigue (1998)
- LeSabre (1998) with 3.8L Engine
- Lumina Car (1998)
- Malibu (1998) with 3.1L Engine
- Monte Carlo (1998)
- Park Avenue (1998) with 3.8L Engine
- Regal (1998)
- Riviera (1998) with 3.8L Engine
- Silhouette (1998)
- Skylark (1998) with 3.1L Engine
- Trans Sport (1998)
- Venture (1998) with 3.4L Engine
After your purchase, simply reply to our confirmation email with your vehicle’s 17-digit VIN, and we’ll handle the programming before shipping. It’s the most reliable way to restore your vehicle’s brain and get it running smoothly again.