Restore Peak Performance to Your GM Vehicle
Is your late-90s GM car or truck suffering from erratic behavior, a persistent Check Engine Light, or a frustrating no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer responsible for managing your engine’s performance, fuel economy, and emissions. Don’t let a faulty computer keep you off the road. This direct-replacement PCM, part number 16245305, is the reliable, plug-and-play solution you need to get your vehicle running smoothly again.
Unlike generic modules from a salvage yard, this unit is professionally programmed specifically for your vehicle. Upon purchase, you simply provide us with your Vehicle Identification Number (VIN), and our technicians will flash the module with the latest, most stable software updates directly from General Motors. This critical step ensures perfect communication between the engine, transmission, and all related sensors, eliminating the need for an expensive trip to the dealership for programming.
From the Diagnostic Bay
We had a 1998 Chevy S10 with the 2.2L engine come into the shop with a random, intermittent misfire on cylinder 3. The owner had already replaced the spark plug, wire, and ignition coil, but the problem persisted. A scan showed no hard codes, just a pending P0303. After checking fuel pressure and injector pulse with a noid light, everything seemed fine. On a hunch, we scoped the injector driver circuit directly at the PCM connector. We found the signal for cylinder 3 was weak and would occasionally drop out entirely. The internal driver in the original PCM was failing. We installed one of our pre-programmed modules, and the truck ran perfectly. It’s a great reminder that sometimes the problem lies with the brain, not the muscle.
Diagnosing a Faulty 1997-1999 Grand Am PCM
A failing PCM can manifest in numerous ways, often mimicking other component failures. If you’ve been chasing gremlins in your engine bay without success, it’s time to consider the control module. This 1997-1999 Grand Am PCM is the definitive solution for these issues. Here are the most common symptoms associated with a bad engine computer in this generation of GM vehicles.
Common Symptoms of PCM Failure
- ✔ Check Engine Light: The light may be on continuously or intermittently, often with communication-related error codes (U-codes) or multiple, seemingly unrelated sensor codes.
- ✔ Engine Stalling: Your vehicle may stall unexpectedly while driving or when coming to a stop, and may be difficult to restart.
- ✔ No-Start Condition: The engine cranks but refuses to start. This can be caused by the PCM failing to command the fuel pump or ignition system.
- ✔ Poor Fuel Economy: A malfunctioning PCM can result in incorrect fuel mixture calculations, leading to a noticeable drop in MPG.
- ✔ Failed Emissions Test: Inability of the PCM to properly manage engine parameters will almost certainly lead to a failed smog check.
- ✔ Harsh or Erratic Shifting: The PCM also plays a role in transmission control, and a fault can cause jerky shifting or a failure to shift into certain gears.
- ✔ Intermittent Misfires: As described in our story, failing injector or ignition drivers within the PCM can cause misfires that are not related to plugs, wires, or coils.
Why Choose a VIN-Programmed Module?
Installing a used PCM from another vehicle will not work. GM vehicles of this era have specific software calibrations for different engine sizes, transmissions, and emissions equipment. Our VIN-programming service takes all the guesswork out of the repair. We ensure the module you receive is an exact match for your vehicle’s original configuration, loaded with the most current software for optimal performance and longevity. This is a true plug-and-play repair.
This module is a direct replacement for service numbers 16245305, 16228016, and 8162280160 and fits a wide range of vehicles including the Pontiac Grand Am, Sunfire, Chevy Cavalier, S10, Malibu, Buick Skylark, Oldsmobile Achieva, and Isuzu Hombre. Please verify the part number and check the detailed fitment list to ensure compatibility with your specific model and engine option.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential for the part to function.
Is this a plug-and-play installation?
Yes, for most vehicles on the fitment list. Because we program the module to your VIN, it will communicate with your vehicle’s existing components. In some rare cases, a security relearn procedure may be necessary, which can typically be done without special tools.
Do I need to return my old PCM?
No core charge is required for this part. You can keep your old module or recycle it locally.
Where is the PCM located on my vehicle?
The location varies. On S10/Sonoma and Cavalier/Sunfire models, it’s typically in the right-hand front of the engine compartment. On Grand Am and Malibu models, it’s often located in the dash area. We recommend consulting a service manual for your specific vehicle for the exact location and removal procedure.
What if my original part number is different?
This module, 16245305, is a compatible replacement for several service numbers, including 16228016. As long as your vehicle is on our compatibility list and your original module is one of the listed service numbers, this part will work correctly once programmed.