Restore Peak Performance to Your Oldsmobile Alero
Is your 1999 Oldsmobile Alero suffering from erratic engine behavior, poor fuel economy, or a persistent Check Engine Light? These are common indicators of a failing Powertrain Control Module (PCM), the central computer of your vehicle. This replacement PCM, part number 16236757, is the definitive solution to restore your car’s original drivability, efficiency, and reliability. It’s not just a part; it’s a professionally prepared, plug-and-play fix for your vehicle’s most complex electronic system.
The PCM is responsible for managing a vast array of functions, from fuel injection and ignition timing to transmission shifting and emissions control. When it begins to fail, the symptoms can be widespread and often misdiagnosed, leading to costly and unnecessary repairs. By replacing your faulty unit with our pre-programmed module, you are addressing the root cause of these issues, ensuring your engine and transmission operate in perfect harmony as the manufacturer intended.
From the Diagnostic Bay
We once had a 1999 Grand Am (which uses the same family of PCM) come into the shop with a harsh 1-2 shift and a P0753 shift solenoid code. The owner had already replaced the transmission solenoid pack twice with no change. The transmission shop was ready to condemn the whole unit. On a hunch, we checked the command signals from the PCM and found they were weak and intermittent. We installed one of these VIN-programmed PCMs, performed the security relearn, and the car shifted perfectly. The problem was never in the transmission; it was the computer failing to control it properly. This highlights how a faulty 1999 Alero PCM or its equivalent can mimic mechanical failures, saving you thousands in the long run.
Is Your Vehicle’s Computer Failing?
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indication that your module needs replacement:
- ✔ Check Engine Light: The light is on, and you may have codes related to sensors, emissions, or internal module failure (e.g., P0601, P0605).
- ✔ Poor Engine Performance: Noticeable loss of power, hesitation during acceleration, stumbling, or stalling.
- ✔ Reduced Fuel Economy: The engine is no longer running efficiently, causing you to visit the gas station more often.
- ✔ Erratic Transmission Shifting: Hard shifts, delayed engagement, or getting stuck in a single gear (limp mode).
- ✔ No-Start Condition: The engine cranks but refuses to start, often due to a lack of spark or fuel injector pulse commanded by the PCM.
- ✔ Intermittent Issues: Problems that appear randomly and are difficult to reproduce, often worsening as the engine warms up.
The Critical Importance of VIN Programming
You can’t simply take a PCM from another vehicle and expect it to work. Each module is programmed with software specific to your car’s Vehicle Identification Number (VIN). This programming dictates engine parameters, transmission strategy, anti-theft system (PassLock/VATS), and installed options. Our service eliminates the guesswork and the need for expensive dealership tools. We flash this module with the latest GM-certified software updates for your specific VIN before it ships. This ensures:
- Complete Compatibility: The module will communicate correctly with all other computers in your vehicle.
- Improved Performance: GM often releases software updates to fix factory bugs and improve drivability and efficiency.
- Simplified Installation: Once installed, you may only need to perform a simple security relearn procedure, which can be done without special tools.
Guaranteed Fitment for Your 1999 Alero PCM and More
This module, identified by service number 16236757, is a direct replacement for a wide range of GM vehicles from the late 1990s. It is also a compatible replacement for service numbers 09356741, 9357034, 9357440, and 9366314. Please verify your part number or consult the list below to ensure compatibility. This module fits the following vehicles:
- 1999 Oldsmobile Alero (3.4L)
- 1998-1999 Pontiac Grand Am (3.1L, 3.4L)
- 1998 Buick LeSabre, Park Avenue, Riviera, Regal (3.8L)
- 1998 Chevrolet Lumina, Monte Carlo, Malibu (3.1L)
- 1998 Chevrolet Camaro, Pontiac Firebird (3.8L)
- 1998 Oldsmobile Cutlass, Intrigue, Eighty Eight
- 1998 Buick Century, Skylark, Oldsmobile Achieva (3.1L)
- 1998 Chevrolet Venture, Oldsmobile Silhouette, Pontiac Trans Sport (3.4L)
Don’t let a faulty computer keep your car off the road. Order this professionally programmed PCM today and restore the smooth, reliable performance you depend on.
Frequently Asked Questions
What is VIN programming?
VIN programming is the process of loading your vehicle’s specific software onto the PCM. This software is tied to your 17-digit Vehicle Identification Number (VIN) and tells the computer about your car’s engine, transmission, tire size, and security system. Without the correct programming, the vehicle will not start or run properly.
Where do I find my VIN?
Your VIN can be found on a metal tag on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Do I need to do anything after installing this PCM?
In most cases for this GM platform, you will need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this cycle three times. This allows the PCM to sync with your vehicle’s anti-theft system. Instructions are readily available online for your specific model.
Is this a new or used part?
This is a high-quality, tested, and guaranteed functional replacement part. Each unit is thoroughly inspected and then programmed with the latest GM software for your specific vehicle to ensure it performs correctly upon installation.
Will this fix my transmission shifting problems?
Yes, in many cases. The PCM controls the transmission’s shift points, line pressure, and torque converter lockup. If the module is failing, it can cause a wide range of shifting issues that are often mistaken for mechanical transmission failure. Replacing a faulty PCM is a common solution for electronic-related transmission problems.