1998-1999 Grand Am PCM Powertrain Control Module 9357034

Is Your Pontiac Grand Am Experiencing Critical Performance Issues?

If your 1998 or 1999 Pontiac Grand Am is suffering from erratic engine behavior, poor fuel economy, a persistent Check Engine Light, or even a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer of your vehicle, the PCM is responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it begins to fail, the symptoms can be widespread and frustrating, leaving you with an unreliable vehicle. This replacement PCM, part number 9357034, is the definitive solution to restore your car’s original performance and dependability.

Symptoms of a Failing Powertrain Control Module

A faulty PCM can manifest in numerous ways. If you’re noticing any of the following issues, it’s a strong indicator that your vehicle’s main computer needs attention. Replacing it can resolve these problems and prevent further damage to related components.

• ✔ Persistent and unexplained Check Engine Light (CEL)
• ✔ Engine stalling, stumbling, or misfiring
• ✔ Harsh or erratic automatic transmission shifting
• ✔ A significant decrease in fuel efficiency
• ✔ The engine cranks but refuses to start
• ✔ Communication errors with diagnostic scan tools
• ✔ Failure to pass state emissions testing

The Importance of a VIN-Programmed 1998-1999 Grand Am PCM

Unlike a generic, off-the-shelf part, this Powertrain Control Module is not a one-size-fits-all solution. For your 1998-1999 Grand Am to operate correctly, the PCM must be specifically programmed to its unique Vehicle Identification Number (VIN). This process ensures the module has the correct software and calibrations for your car’s specific engine, transmission, and factory options. We handle this critical step for you. Upon purchase, simply provide us with your VIN, and our technicians will flash the module with the latest GM-certified updates. This guarantees a seamless, plug-and-play installation without the need for an expensive trip to the dealership for programming.

This unit is a direct replacement for a wide range of GM vehicles from this era, cross-referencing with multiple service numbers including 09356741, 16236757, 9357440, and 9366314. It provides a reliable and cost-effective way to get your Grand Am, Alero, Cutlass, or other compatible model back on the road with confidence.