Restore Peak Performance to Your GM Vehicle
Is your 1996 Oldsmobile Silhouette, Pontiac Trans Sport, or another classic GM vehicle suffering from frustrating and hard-to-diagnose issues? An aging or faulty Powertrain Control Module (PCM) is often the hidden culprit behind poor engine performance, erratic transmission behavior, and persistent check engine lights. This replacement PCM, compatible with part numbers 16211539, 88963800, and 16231853, is the definitive solution to restore your vehicle’s reliability and drivability. We take the guesswork out of the repair by programming the module specifically to your vehicle’s VIN with the latest official GM software updates before it ships.
From the Diagnostic Bay
We had a 1996 Buick Regal come into the shop that was driving the owner crazy. It had a random stalling issue and would shift hard from first to second gear. The owner had already replaced the throttle position sensor and the mass air flow sensor based on forum advice, but the problem persisted. After hooking up our scanner, we noticed communication dropouts with the PCM. We swapped in a VIN-programmed module, performed the quick security relearn, and the car ran like it just rolled off the assembly line. It wasn’t the sensors; it was the computer failing under load. This is a classic scenario for these mid-90s GM vehicles.
Common Symptoms of a Failing 1996 Silhouette PCM
If you’re experiencing any of the following issues, a faulty engine computer is a likely cause. Replacing it can resolve multiple problems at once, saving you time and money on chasing down individual sensor failures.
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Engine stalling for no apparent reason, especially when warm.
- ✔ Harsh, erratic, or delayed automatic transmission shifting.
- ✔ A complete no-start condition where the engine cranks but won’t fire up.
- ✔ Noticeable decrease in fuel economy and overall engine power.
- ✔ Failure to communicate with OBD-II diagnostic scan tools.
- ✔ Inaccurate or non-functioning dashboard gauges.
The Importance of VIN-Specific Programming
You can’t simply install a used PCM from another vehicle. The Powertrain Control Module is the central computer that manages everything from fuel injection and ignition timing to transmission shift points and emissions equipment. Each module is programmed with a specific calibration file tailored to your vehicle’s engine, transmission, and factory options. Our process ensures a perfect match. By providing us with your VIN, we flash this module with the precise software your vehicle needs, including any updates GM released after 1996 to address common drivability issues. This makes the installation process as seamless as possible, often only requiring a simple security relearn procedure that you can do in your own driveway.
Direct Replacement for a Wide Range of GM Models
This module is a direct-fit replacement for the original electronic control module on an extensive list of 1996 General Motors vehicles. Please verify your model and engine options below:
- Achieva: 1996 (3.1L V6)
- Beretta: 1996 (3.1L V6)
- Bonneville: 1996 (3.8L V6)
- Century: 1996 (3.1L V6)
- Ciera: 1996 (3.1L V6)
- Corsica: 1996 (3.1L V6)
- Cutlass: 1996 (3.1L V6, 3.4L V6)
- Eighty Eight: 1996 (3.8L V6)
- Grand Am: 1996 (3.1L V6)
- Grand Prix: 1996
- LeSabre: 1996 (3.8L V6)
- Lumina Car: 1996 (3.1L V6, 3.4L V6)
- Lumina Van: 1996 (3.4L V6)
- Monte Carlo: 1996
- Ninety Eight: 1996 (3.8L V6)
- Park Avenue: 1996 (3.8L V6)
- Regal: 1996
- Riviera: 1996 (3.8L V6)
- Silhouette: 1996 (3.4L V6)
- Skylark: 1996 (3.1L V6)
- Trans Sport: 1996 (3.4L V6)
Frequently Asked Questions
Is this part difficult to install?
No, the physical installation is straightforward. It typically involves disconnecting the battery, unplugging the electrical connectors, and removing a few bolts. Because we program it to your VIN, the complex part is already done. You may need to perform a simple security relearn procedure, which can be found online and takes about 30 minutes using only your ignition key.
How do I provide my VIN?
After you complete your purchase, simply reply to your order confirmation email with your vehicle’s 17-digit VIN. You can also send it to us through the website’s messaging system with your order number. We cannot ship the part until we receive your VIN.
Will this fix my vehicle’s specific problem?
This module will correct any issues directly caused by a faulty PCM. While we cannot diagnose your vehicle remotely, the symptoms listed on this page are the most common indicators of PCM failure for these models.
What if my original part number is different?
This module, part number 16211539, is the correct service replacement for several original part numbers, including 88963800 and 16231853. As long as your vehicle is on the compatibility list, our VIN programming ensures it will function correctly.
Do I need to return my old PCM?
No, there is no core charge or requirement to send your old part back to us.