Is Your 1996 GM Vehicle Running Rough?
If you’re experiencing frustrating issues like a persistent Check Engine Light, erratic engine behavior, poor fuel economy, or transmission shifting problems in your 1996 Buick Century, Regal, Lumina, or other compatible GM model, a failing Powertrain Control Module (PCM) is a likely culprit. The PCM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to automatic transmission shifts. When it fails, it can cause a cascade of problems that are often difficult to diagnose.
This is a direct replacement PCM, part number 16211539, which is also compatible with service numbers 88963800 and 16231853. We take the guesswork out of the repair by programming the module specifically to your vehicle’s Vehicle Identification Number (VIN) before it ships. This ensures that all factory settings and operational parameters are perfectly matched to your car’s original specifications, making for a seamless installation process.
From the Diagnostic Bay
I once had a 1996 Buick LeSabre come in with a complaint of a harsh 1-2 shift and an intermittent no-start condition. The owner had already replaced the transmission solenoids and the crankshaft position sensor based on advice from a forum, but the problem persisted. After hooking up the scanner, I noticed erratic data from the throttle position sensor, even though the sensor itself tested fine. This pointed me toward the PCM. The 5-volt reference circuit inside the module was failing intermittently, causing the sensor to send bad data and confusing the entire system. A properly programmed replacement PCM, like this one, solved all the issues in one go, saving the customer from further expensive and unnecessary part replacements.
Common Symptoms of a Failing 1996 Century PCM
- ✔ Persistent and illuminated Check Engine Light (CEL).
- ✔ Vehicle refuses to start or starts intermittently.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Failure to pass state emissions testing.
- ✔ Communication errors with diagnostic scan tools.
A Reliable, Plug-and-Play Solution
Don’t let a faulty computer keep your classic GM off the road. This replacement 1996 Century PCM is the definitive solution to restore your vehicle’s performance and reliability. By providing us with your VIN during checkout, you receive a unit that is loaded with the latest GM software updates and is ready for installation right out of the box. This eliminates the need for expensive trips to the dealership for programming. Simply install the module, perform any necessary security relearn procedure (if applicable for your model), and get back to confident driving.
Wide Range of Compatibility
This electronic control module is engineered to work with a large number of 1996 General Motors vehicles equipped with the 3.1L, 3.4L, and 3.8L engines. Please verify your part number and check the fitment list below to ensure compatibility with your specific model, including the Regal, Grand Prix, Lumina, Monte Carlo, Bonneville, LeSabre, and many more.
Frequently Asked Questions
How does the programming process work?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this VIN to access the latest GM-certified software for your specific make and model, and then flash it onto the module before shipping.
Is this part difficult to install?
The physical installation is straightforward for a DIY mechanic with basic tools. It typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module to swap in the new one. Some vehicles may require a security or anti-theft relearn procedure, which can usually be done without special tools.
Will this fix my car’s specific problem?
This PCM is a direct solution for issues caused by a faulty module. While it resolves the vast majority of the symptoms listed, we always recommend a proper diagnosis by a qualified mechanic to rule out other potential issues like wiring or sensor faults.
What is the difference between a PCM, ECM, and ECU?
The terms are often used interchangeably. ECM (Engine Control Module) and ECU (Electronic Control Unit) are general terms. PCM (Powertrain Control Module) specifically refers to a module that controls both the engine and the transmission, which is standard on most vehicles like yours.
Do I need to send my old part back?
This purchase does not require a core return. You can keep your old module.