Programmed 1996 Monte Carlo PCM 16211539 ECM Engine Computer

Restore Peak Performance to Your GM Vehicle

If you’re dealing with frustrating engine problems in your 1996 GM car—like erratic idling, stalling, a persistent Check Engine Light, or a complete no-start condition—a failing Powertrain Control Module (PCM) is often the culprit. As a technician with over 20 years of experience, I’ve seen how a faulty engine computer can sideline an otherwise solid vehicle. This replacement PCM, part number 16211539, is the definitive solution to get your car running reliably again. It’s not just a part; it’s a direct-fit, plug-and-play fix that eliminates guesswork and costly dealership programming fees.

We take the complexity out of the repair. Before this module ships, we flash it with the latest official GM software updates, precisely matched to your vehicle using the VIN you provide at checkout. This ensures perfect communication between the engine, transmission, and all related systems, restoring the smooth operation and fuel efficiency you expect. This is the same process used at a dealership, but delivered directly to your door.

Common Symptoms of a Failing PCM

A failing engine computer can manifest in numerous ways. If your vehicle is experiencing any of the following, a faulty PCM could be the root cause. A proper diagnosis is key, and these symptoms often point directly to the module.

• ✔ Check Engine Light is on with codes such as P0601 (Internal Control Module Memory Check Sum Error) or other P06xx codes.
• ✔ Engine cranks but will not start.
• ✔ Rough or unpredictable engine idling.
• ✔ Vehicle stalls unexpectedly while driving or at a stop.
• ✔ Noticeable decrease in fuel economy.
• ✔ Harsh or incorrect automatic transmission shifting.
• ✔ Failure to pass an emissions inspection.

A Straightforward Guide to Installation

Replacing the PCM on these 1996 GM models is a job most DIYers can handle with basic tools. Our pre-programmed module makes it even easier. Follow these general steps to get back on the road quickly.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
2. Locate the PCM: On most of these vehicles, the PCM is located in the engine bay, often inside the air filter box housing for protection.
3. Disconnect Connectors: Carefully unplug the electrical wiring harnesses from the old module. There are typically multiple connectors with locking tabs that need to be released.
4. Remove the Old Module: Unbolt the PCM from its mounting bracket or housing.
5. Install the New PCM: Mount your new, pre-programmed module in the same location and secure it.
6. Reconnect Everything: Plug the wiring harnesses firmly into the new PCM until they click into place. Reconnect the negative battery terminal.
7. Perform Security Relearn (If Necessary): Some GM vehicles require a simple security relearn procedure, which can typically be done without special tools. It usually involves turning the key to the ‘ON’ position for 10-15 minutes. We include instructions if this is required for your specific vehicle.

Will This Fit My Vehicle?

This module is a direct replacement for service numbers 88963800, 16211539, and 16231853. It is guaranteed to be compatible with the following 1996 models. Please provide your VIN upon purchase to ensure we load the correct software for your specific engine and options.

• ✔ 1996 Achieva (3.1L)
• ✔ 1996 Beretta (3.1L)
• ✔ 1996 Bonneville (3.8L)
• ✔ 1996 Century (3.1L)
• ✔ 1996 Ciera (3.1L)
• ✔ 1996 Corsica (3.1L)
• ✔ 1996 Cutlass (3.1L & 3.4L)
• ✔ 1996 Eighty Eight (3.8L)
• ✔ 1996 Grand Am (3.1L)
• ✔ 1996 Grand Prix
• ✔ 1996 LeSabre (3.8L)
• ✔ 1996 Lumina Car (3.1L & 3.4L)
• ✔ 1996 Lumina Van (3.4L)
• ✔ 1996 Monte Carlo
• ✔ 1996 Ninety Eight (3.8L)
• ✔ 1996 Park Avenue (3.8L)
• ✔ 1996 Regal
• ✔ 1996 Riviera (3.8L)
• ✔ 1996 Silhouette (3.4L)
• ✔ 1996 Skylark (3.1L)
• ✔ 1996 Trans Sport (3.4L)

Frequently Asked Questions About the 1996 Monte Carlo PCM