Programmed 1998-1999 Cutlass PCM Powertrain Control Module 09356741

Restore Your Vehicle’s Performance and Reliability

Are you battling frustrating engine problems with your GM vehicle? Intermittent stalling, a persistent check engine light, poor fuel economy, or a car that simply refuses to start can often be traced back to one critical component: the Powertrain Control Module (PCM). As the electronic brain of your vehicle, the PCM controls everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can create a cascade of baffling issues that are difficult to diagnose.

I’ve spent countless hours in the service bay tracing these exact symptoms. A failing PCM doesn’t always throw a clear code. Sometimes, it’s a slow degradation of performance that you barely notice until one day, the car won’t start. This replacement module is the definitive solution, arriving at your door programmed with the latest GM software updates specifically for your vehicle’s VIN. This isn’t just a replacement; it’s a restoration of your vehicle’s original operating parameters.

Why Your 1998-1999 Cutlass PCM is a Critical Component

The 1998-1999 Cutlass PCM is the central command for your entire powertrain. It takes data from sensors all over your engine and transmission—like the crankshaft position sensor, oxygen sensors, and throttle position sensor—and makes thousands of calculations per second. It then sends precise commands to the fuel injectors, ignition coils, and transmission solenoids. A healthy PCM means a smooth, efficient, and reliable engine. A faulty one means chaos. Our VIN-programmed module ensures all these systems communicate correctly, just as the factory intended.

Common Signs of a Failing PCM

• ✔ Check Engine Light is illuminated, often with internal module codes like P0601 or P0606.
• ✔ Engine cranks but will not start.
• ✔ Unexplained drops in fuel economy.
• ✔ Harsh or erratic automatic transmission shifting.
• ✔ The engine stalls unexpectedly while driving or at idle.
• ✔ Communication errors with scan tools (U-codes).
• ✔ Apparent failure of multiple sensors at once.

A Straightforward Guide to Installation

1. ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
2. ✔ Locate the PCM: On these GM models, the PCM is typically found in the engine compartment (often inside the air filter box) or under the passenger side of the dashboard. A quick search for your specific model will confirm the location.
3. ✔ Disconnect Harnesses: Carefully disengage the locking tabs on the electrical connectors. These can be brittle, so apply steady, even pressure. Pull the connectors straight out from the module.
4. ✔ Remove the Old Module: Unbolt the PCM from its mounting bracket. Keep the hardware, as you will need it to install the new unit.
5. ✔ Install the New PCM: Mount your new, pre-programmed module in place and secure it with the original hardware.
6. ✔ Reconnect Everything: Firmly plug the electrical harnesses back into the new PCM until they click into place. Reconnect the negative battery terminal.
7. ✔ Perform Security Relearn (If Needed): Some GM vehicles require a simple key-cycle security relearn procedure. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds. Repeat this process three times. Your vehicle should then start and run normally.

Verified Vehicle Compatibility

This module is a direct-fit replacement for units with service numbers 09356741, 16236757, 9357034, 9357440, or 9366314. It is compatible with the following vehicles:

• 1999 Alero (3.4L)
• 1998 Achieva (3.1L)
• 1998 Bonneville
• 1998 Camaro (3.8L)
• 1998 Century (3.1L)
• 1998-1999 Cutlass
• 1998 Eighty Eight
• 1998 Firebird (3.8L)
• 1998-1999 Grand Am (3.1L, 3.4L)
• 1998 Grand Prix
• 1998 Intrigue
• 1998 LeSabre (3.8L)
• 1998 Lumina Car
• 1998 Malibu (3.1L)
• 1998 Monte Carlo
• 1998 Park Avenue (3.8L)
• 1998 Regal
• 1998 Riviera (3.8L)
• 1998 Silhouette
• 1998 Skylark (3.1L)
• 1998 Trans Sport
• 1998 Venture (3.4L)

Note: Compatibility may depend on specific options. Providing your VIN is essential to ensure we send the correctly programmed 1998-1999 Cutlass PCM for your exact vehicle configuration.