Restore Peak Performance to Your GM Vehicle
Is your 1998 Pontiac Firebird or another GM vehicle suffering from frustrating issues like a persistent Check Engine Light, erratic engine behavior, or a complete no-start condition? The Powertrain Control Module (PCM) is the brain of your vehicle, orchestrating everything from fuel injection and ignition timing to transmission shifts. When it fails, it can cause a cascade of problems that are often difficult to diagnose. This isn’t just a part; it’s the solution to getting your car back on the road, running as it should.
This replacement PCM, part number 9366314, is a reliable, direct-fit solution. The best part? We handle the most complicated step for you. Before we ship it, we program the module with your vehicle’s unique VIN and install the latest factory software updates from GM. This means no expensive trips to the dealership, no special scan tools, and no headaches. It arrives at your door ready for a straightforward installation.
A Technician’s Notebook
I remember a 1998 Camaro with the 3.8L V6 that came into my bay a few years back. The owner was at his wit’s end. The car had an intermittent stalling problem that only happened after it was fully warmed up and driven for 20+ minutes. Two other shops had thrown parts at it—fuel pump, crank sensor—with no luck. After hooking up my scope and monitoring sensor data, I noticed the 5-volt reference signal from the PCM would briefly drop out right before the stall. It was a classic case of internal PCM components failing under heat. We swapped in a VIN-programmed module just like this one, and the problem was solved for good. These intermittent electrical gremlins are often traced back to a failing PCM, and a pre-programmed unit is the most efficient fix.
Is Your Vehicle Showing These Signs of PCM Failure?
A faulty PCM can manifest in various ways. If you’re experiencing any of the following, your engine’s computer may be the culprit. This module is a common fix for diagnostic trouble codes (DTCs) like P0601, P0602, P0605, and other internal controller errors.
- ✔ Check Engine Light is on with no clear cause
- ✔ Engine cranks but refuses to start
- ✔ Unexplained stalling or rough idling
- ✔ Noticeable drop in fuel economy
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Failure to pass an emissions test
- ✔ Communication errors with diagnostic scan tools
A Straightforward Guide to Installation
One of the biggest benefits of this module is its plug-and-play nature. You can perform this replacement with basic hand tools in your own garage. Follow these steps to get your car running smoothly again.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the PCM: On most of these GM vehicles, the PCM is located in the engine compartment, often on the passenger side near the fender or firewall, or under the dash.
- Disconnect the Old Module: Carefully unplug the electrical harness connectors. They have locking tabs that may need to be gently pried or squeezed to release. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed PCM into place. Reconnect the electrical harnesses, ensuring they click securely into position.
- Reconnect the Battery: Attach the negative battery terminal.
- Perform Security Relearn: For many GM vehicles of this era, a simple security relearn procedure is required. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. This allows the new PCM to sync with your vehicle’s anti-theft system. Consult your owner’s manual for the specific procedure for your model.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 09356741, 16236757, 9356741, 9357034, 9357440, and 9366314. It is guaranteed to fit the following models and configurations:
- ACHIEVA 98 (3.1L)
- ALERO 99 (3.4L, ID 16236757, 9356741, 9357034, 9357440, 9366314)
- BONNEVILLE 98
- CAMARO 98 (3.8L)
- CENTURY 98 (3.1L)
- CUTLASS 98
- CUTLASS 99 (ID 16236757)
- EIGHTY EIGHT 98
- FIREBIRD 98 (3.8L)
- GRAND AM 98 (3.1L)
- GRAND AM 99 (3.4L, ID 16236757, 9356741, 9347440, 9357034, 9366314)
- GRAND PRIX 98
- INTRIGUE 98
- LESABRE 98 (3.8L)
- LUMINA CAR 98
- MALIBU 98 (3.1L)
- MONTE CARLO 98
- PARK AVENUE 98 (3.8L)
- REGAL 98
- RIVIERA 98 (3.8L)
- SILHOUETTE 98
- SKYLARK 98 (3.1L)
- TRANS SPORT 98
- VENTURE 98 (3.4L)
Frequently Asked Questions
Do I need to have this PCM programmed?
No. We handle all the programming for you before shipment. Simply provide us with your vehicle’s 17-digit VIN at checkout, and we’ll flash the module with the correct software and latest GM updates for your specific car.
What is the benefit of the latest GM software?
Over the life of a vehicle, manufacturers often release software updates to fix bugs, improve transmission shifting logic, enhance fuel efficiency, and correct other driveability issues. Your new PCM will have these improvements built-in, which your old module likely lacks.
Where is the PCM located on my 1998 Firebird?
On the 1998 Pontiac Firebird, the PCM is typically located under the hood on the passenger side, near the fender and firewall area. It’s a silver metal box with several large electrical connectors.
What is a “VIN” and where can I find it?
The VIN is your Vehicle Identification Number. It’s a unique 17-digit code for your car. You can find it on a metal plate on the driver’s side of the dashboard (visible through the windshield), on your vehicle’s registration, or on your insurance card.
Is this a difficult part to install for a DIYer?
Not at all. With the programming already completed, this is a simple bolt-off, bolt-on job. The most technical step for some vehicles is the security relearn procedure, which only requires turning the key and waiting. Basic hand tools are all you need.