Are you tired of dealing with frustrating engine problems like stalling, a persistent check engine light, or a car that just won’t start? A failing Powertrain Control Module (PCM) is often the hidden culprit behind these issues, leaving you stranded and stressed. This replacement PCM is the definitive solution, arriving at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). This means no expensive trips to the dealership for programming—just a straightforward installation to get you back on the road with confidence.
Common Symptoms & Your Solution
If your vehicle is experiencing any of the following, a faulty PCM is the likely cause. This professionally programmed module is designed to resolve these exact problems:
- Unexplained stalling or rough idling
- Failure to start, even with a good battery and starter
- Erratic or harsh automatic transmission shifting
- Check Engine Light with communication error codes (like P0601, P0605, P0606)
- Poor fuel economy and decreased engine performance
- Intermittent issues that mechanics can’t seem to diagnose
By replacing your old unit with this pre-programmed 1999 Grand Am PCM 16245305, you are installing a reliable, updated component that restores your vehicle’s brain to perfect working order.
Features & Benefits
- ✔ Plug & Drive Ready: This module arrives fully programmed to your vehicle’s VIN. No extra programming or dealer visits required, saving you time and money.
- ✔ Latest GM Software: We flash each unit with the newest updates from General Motors, ensuring optimal engine performance, fuel efficiency, and emissions control.
- ✔ Guaranteed Compatibility: By matching the software to your VIN, we ensure this PCM works perfectly with your vehicle’s specific engine, transmission, and options.
- ✔ Cost-Effective Solution: Get dealership-level quality and programming without the dealership price tag. This is the smart, affordable fix for a complex problem.
- ✔ Broad Model Fitment: While this is a perfect 1999 Grand Am PCM 16245305, it also fits a wide range of other GM vehicles, including the S10, Cavalier, Malibu, and Sunfire.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
Expert Insight: The VIN Programming Advantage
As a technician, I’ve seen countless DIYers buy a used computer from a salvage yard, only to find their car still won’t start. That’s because on these GM vehicles, the PCM is tied to the original car’s security system (VATS/Passlock) and specific options. Our VIN programming process isn’t just a convenience—it’s essential. We configure the module to recognize your keys and match your vehicle’s build sheet, eliminating security lockouts and ensuring everything from your transmission to your A/C compressor functions exactly as the factory intended. This is the difference between a part that just fits and a part that actually works.
Don’t let a faulty computer keep your reliable car off the road. This is your opportunity to fix it right the first time. Simply provide your VIN after purchase, and we’ll handle the complex programming. Your vehicle will run smoothly and reliably once again. The correct part number for your vehicle may be 1999 Grand Am PCM 16245305 or one of the compatible service numbers like 16228016.
Frequently Asked Questions
Do I need to do any programming myself?
No. This PCM comes fully programmed to your vehicle’s VIN. It is ready for installation right out of the box. In some cases, a simple security relearn procedure may be required, which takes only a few minutes and does not require any special tools.
Where do I provide my VIN?
After you complete your purchase, you will need to send us a message with your vehicle’s 17-digit VIN. We cannot ship your part until we have this information to perform the custom programming.
Is this a difficult part to install?
For most of the listed vehicles, the PCM is in an accessible location (like the RH front engine compartment or under the dash). Installation typically involves disconnecting the battery, unplugging the electrical connectors from the old unit, unbolting it, and then installing the new one in the reverse order. It’s a job many DIYers can handle with basic tools.
How do I know for sure that my PCM is the problem?
While the symptoms listed above are strong indicators, a definitive diagnosis is always best. Common diagnostic trouble codes (DTCs) pointing to a bad PCM include P0601-P0606 (Internal Control Module errors). If your mechanic has diagnosed a faulty computer, this is the correct replacement part.
What does this part fit besides a 1999 Grand Am?
This module is compatible with a wide range of GM models from the late 90s and early 2000s, including the Chevy S10, Sonoma, Cavalier, Malibu, Buick Skylark, Oldsmobile Achieva, Pontiac Sunfire, and Isuzu Hombre with the 2.2L or 2.4L engine. Please check the compatibility list in the description to confirm your specific vehicle.