Is Your 1996 GM Vehicle Running Rough, Stalling, or Refusing to Start?
If you’re dealing with frustrating engine problems, erratic transmission shifting, or a persistent check engine light on your 1996 Buick Riviera or another compatible GM model, the culprit is often the Powertrain Control Module (PCM). As a technician with over two decades of experience, I’ve seen how a failing PCM can turn a reliable car into a source of constant headaches. Itโs the brain of your vehicle, and when it malfunctions, it can cause a cascade of issues that are often misdiagnosed as bad sensors or faulty wiring.
A Real-World Scenario: Just last month, a 1996 Oldsmobile Eighty-Eight (which uses this exact same PCM) was towed to my shop. The owner had already replaced two ignition coils and the crank sensor trying to chase down a random, intermittent no-start condition. After hooking up my diagnostic tools, I saw no communication with the PCM. A quick check of the power and ground pins at the module confirmed they were good. The issue was internal to the computer. We installed one of our pre-programmed modules, and the car fired right up and has been running perfectly ever since. This saved the customer hundreds in further diagnostic fees and parts guesswork.
The Direct-Fit Solution: A Programmed 1996 Riviera PCM
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a quality PCM, service number 16211539, and professionally program it using your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures that the module has the correct software and calibrations for your specific engine, transmission, and factory options. It arrives at your door ready to goโno expensive trip to the dealership for programming is required.
- โ VIN-Programmed for Your Car: We load the latest GM software updates for your specific vehicle, ensuring optimal performance and fuel economy.
- โ Plug-and-Play Installation: Simply disconnect your old module and connect this one. Itโs designed for a straightforward DIY or professional installation.
- โ Solves Common Failure Symptoms: Effectively addresses issues like harsh shifting, no-start/stalling, poor fuel mileage, and false diagnostic trouble codes.
- โ Broad GM Compatibility: This module is a direct replacement for service numbers 88963800, 16211539, and 16231853, fitting a wide range of 1996 GM cars and vans.
Simple, No-Hassle Installation Guide
Replacing the PCM on these vehicles is a job most home mechanics can handle. Follow these steps to get your car back in top shape:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the PCM: On most 1996 GM models like the Riviera, Park Avenue, or Bonneville, you’ll find the PCM located under the hood, typically inside the air filter housing or mounted nearby.
- Disconnect the Harnesses: Carefully unclip the locking tabs on the electrical connectors and gently pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New PCM: Mount your new, pre-programmed PCM in the same location, ensuring it’s secure. Reconnect the wiring harnesses until they click firmly into place.
- Power Up: Reconnect the negative battery terminal. The vehicle is now ready to start.
Expert Pro Tip from 20+ Years on the Job:
Before you plug in your new PCM, take a bright flashlight and carefully inspect the pins inside the vehicle’s wiring harness connectors. Look for any signs of green or white corrosion, or any pins that look bent or pushed back. A poor connection is a common cause of PCM failure and can damage your new module. Use a small pick and some electrical contact cleaner to gently clean and straighten any problematic pins for a reliable, long-lasting repair.
Don’t let a faulty computer keep you off the road. By providing us with your VIN at checkout, you ensure you receive a part that is perfectly matched to your car, restoring its original performance and reliability. Order today and solve your vehicle’s electronic issues for good.