Restore Peak Performance to Your 1996 GM Vehicle
If you’re dealing with frustrating issues like stalling, a persistent Check Engine Light, poor fuel economy, or a car that just won’t start, a failing Powertrain Control Module (PCM) is often the culprit. As the brain of your vehicle, when the PCM falters, it can cause a host of problems that are difficult to diagnose. This replacement PCM, part number 16231851, is the reliable, straightforward solution to get your 1996 Buick Century or other compatible GM model running smoothly again.
The biggest challenge with replacing a PCM has always been the required programming. We eliminate that headache entirely. Before we ship your part, we flash it with the latest GM software updates, precisely matched to your car’s Vehicle Identification Number (VIN). This means it arrives at your door ready for installation, saving you a costly trip to the dealership and getting you back on the road faster.
From the Diagnostic Bay
I remember a 1996 Chevy Cavalier that came into my shop with a bizarre, intermittent no-start condition. The owner had already replaced the battery, starter, and fuel pump. The scan tool showed no communication with the PCM. After checking the powers and grounds to the module—which were all good—it was clear the computer itself was failing internally. These older PCMs, after decades of heat cycles and vibration, can develop microscopic cracks in the circuit board. We installed a VIN-programmed module just like this one, and the car fired up on the first try and never had the issue again. It’s a classic failure mode for these vehicles.
Is Your Vehicle Showing These Symptoms?
- ✔ Engine stalling or cutting out while driving
- ✔ Complete no-start condition with power to all other systems
- ✔ Check Engine Light is on with internal module codes (e.g., P0601, P0605)
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Noticeable decrease in fuel mileage
- ✔ Failure to communicate with a diagnostic scan tool
A Straightforward Guide to Your PCM Installation
Installing your new 1996 Century PCM is a manageable job for a DIYer with basic tools. Follow these general steps for a successful replacement.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental contact.
- Locate the PCM: On most of these 1996 GM vehicles, the PCM is located in the engine bay, often attached to the firewall or inner fender. It’s a silver metal box with several large electrical connectors.
- Disconnect the Connectors: Carefully unlatch and remove the electrical harness connectors from the old PCM. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket. Keep the hardware as you may need to reuse it.
- Install the New Module: Mount your new, pre-programmed PCM onto the bracket and securely fasten it.
- Reconnect Everything: Firmly plug the electrical connectors into the new PCM until they click into place. Reconnect the negative battery terminal.
- Final Check: Turn the key to the ‘On’ position for 10-15 seconds before starting the engine. This allows the system to initialize. Start the vehicle and check for proper operation.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the original part in the following 1996 models. It is a compatible replacement for part numbers 16231851 and 16215830.
- ✔ 1996 Buick Skylark (2.4L Engine)
- ✔ 1996 Pontiac Sunfire
- ✔ 1996 Oldsmobile Achieva (2.4L Engine)
- ✔ 1996 Chevrolet Beretta (2.2L Engine)
- ✔ 1996 Chevrolet Cavalier
- ✔ 1996 Oldsmobile Ciera (2.2L Engine)
- ✔ 1996 Pontiac Grand Am (2.4L Engine)
- ✔ 1996 Chevrolet Corsica (2.2L Engine)
- ✔ 1996 Buick Century (2.2L Engine)
- ✔ 1996 Chevrolet S10 / GMC Sonoma (2.2L Engine)
Frequently Asked Questions
Do I need to do any programming after I receive this PCM?
No. We program the module to your specific VIN before it ships. It arrives ready for installation, with no extra programming required.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the part until we receive the VIN.
Is this a guaranteed fix for my car’s problems?
While this 1996 Century PCM corrects issues caused by a faulty module, it’s crucial to ensure your vehicle has been properly diagnosed. This part will not fix problems related to other faulty components like sensors or wiring.
What if my original part number is 16215830?
This module is a fully compatible and interchangeable replacement for part number 16215830. It will function identically in your vehicle once programmed.
Will this fix my vehicle’s security system (VATS/Passlock)?
This PCM comes programmed for engine and transmission functions based on your VIN. However, on some GM models, a separate security relearn procedure may be required after installation. This procedure can typically be done without special tools and instructions can be found online or in a service manual.