Restore Peak Performance to Your Vehicle
Is your 1998-1999 Pontiac Grand Am, or another compatible GM vehicle, suffering from perplexing issues like a persistent check engine light, erratic shifting, poor fuel economy, or even a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM). As the central computer of your vehicle, the PCM is responsible for managing critical engine and transmission functions. When it begins to fail, it can cause a cascade of problems that are frustrating and difficult to diagnose. This replacement PCM, part number 09356741, is the definitive solution to restore your vehicle’s reliability and drivability.
From the Diagnostic Bay
We had a ’99 Grand Am with the 3.4L V6 come into the shop with a complaint of harsh, unpredictable shifting and a check engine light that wouldn’t stay off. The customer had already replaced the transmission fluid and filter, but the problem persisted. Our scan tool showed a loss of communication with the transmission control module, which is integrated into the PCM on this platform. After verifying the wiring and connectors were sound, we identified the PCM as the culprit. We installed one of these VIN-programmed modules, performed the quick security relearn, and the car drove like new. The shifting was smooth, the engine ran perfectly, and the check engine light was gone for good. It’s a common failure, and a correctly programmed replacement is the only right way to fix it.
Why Choose a VIN-Programmed 1998-1999 Grand Am PCM?
Simply swapping a used computer from another vehicle won’t work. Each PCM is programmed with vehicle-specific information, including the Vehicle Identification Number (VIN) and calibrations for the engine, transmission, and options your car came with. Our process eliminates the guesswork and the need for an expensive trip to the dealership. When you order, you provide us with your VIN. We then flash this module with the latest, most up-to-date software directly from GM for your exact vehicle. This ensures perfect compatibility and optimal performance right out of the box. It’s a true plug-and-play solution designed for a seamless installation.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) illumination
- ✔ Engine stalling, stumbling, or misfiring
- ✔ Harsh or erratic automatic transmission shifting
- ✔ A significant drop in fuel economy
- ✔ Failure to pass an emissions test
- ✔ Vehicle entering ‘limp mode’ with reduced power
- ✔ Complete no-start or intermittent starting condition
Guaranteed Fitment and Compatibility
This module, service number 09356741, is a direct replacement for a wide range of 1998 and 1999 General Motors vehicles. It is compatible with multiple service numbers, including 16236757, 9357034, 9357440, and 9366314. It fits models such as the Pontiac Grand Am, Oldsmobile Alero, Chevrolet Malibu, Buick Century, and many others equipped with the 3.1L, 3.4L, or 3.8L engines. Please verify the part number on your original module or consult the detailed fitment list to ensure this is the correct part for your car. Our VIN programming guarantees it will function as the original did.
Frequently Asked Questions
What is the process after I place my order?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot ship the module until we have this information. Once we receive your VIN, we will program the PCM with the latest GM software specific to your vehicle and ship it to you, typically within one business day.
Is this part difficult to install?
Installation is generally straightforward for someone with basic mechanical skills. The PCM is typically located in the engine bay or under the dashboard. You will need to disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and then install the new one in its place.
Will I need to do anything after installing the new PCM?
In most cases on these GM vehicles, you will need to perform a simple security relearn procedure, also known as a VATS relearn. This procedure can be done without any special tools and typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions are readily available online or we can assist you.
Does this unit come with a warranty?
Yes, all of our electronic control modules come with a standard warranty against defects in workmanship. Please refer to the warranty section of our website for complete details and duration.
How do I find my original part number?
Your original part number is printed on a sticker on the housing of your current PCM. It will typically be a large 8-digit number. Matching this number to one of the compatible service numbers listed (09356741, 16236757, etc.) helps confirm fitment.