Restore Your GM Vehicle’s Performance and Reliability
Is your 1998 Chevrolet Camaro, Pontiac Firebird, or other GM vehicle running rough, stalling unexpectedly, or showing a persistent Check Engine Light? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your engine. A faulty PCM can cause a cascade of frustrating issues, from poor fuel economy and failed emissions tests to a complete no-start condition. Don’t let a bad module keep you off the road. This replacement PCM, part number 09356741, is the reliable, straightforward solution you need.
Over my 20 years in the shop, I’ve seen how a failing PCM can mimic a dozen other problems, leading owners down a rabbit hole of expensive and unnecessary repairs. The truth is, the internal electronics on these late ’90s modules can degrade over time due to heat and vibration. This isn’t just a part replacement; it’s a restoration of your vehicle’s core operational logic. We make the process simple by pre-programming this module specifically for your car using your Vehicle Identification Number (VIN). This ensures it has the latest GM software updates and communicates perfectly with your vehicle’s systems right out of the box.
Case Study: A Tricky Diagnosis
A customer brought in a ’98 Buick LeSabre with the 3.8L V6, a car I know like the back of my hand. The complaint was a maddeningly intermittent no-start. It would be fine for days, then refuse to fire up. There were no consistent trouble codes, just a history of random communication errors. We checked the fuel pump, ignition system, and crank sensor—all tested fine. From experience, I know these ghost-in-the-machine problems often point to the PCM. The internal processor was likely failing under specific temperature conditions. We installed one of our pre-programmed PCMs, and the problem vanished instantly. The customer saved hundreds on diagnostic time and got a permanent fix.
Is Your Vehicle Showing These Signs of PCM Failure?
- ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (PCM Processor Fault).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained stalling or rough, erratic idling.
- ✔ Noticeable decrease in fuel mileage.
- ✔ Harsh or incorrect automatic transmission shifting.
- ✔ Failing a state emissions inspection.
- ✔ Other warning lights (like ABS or Traction Control) illuminate randomly.
A Straightforward Guide to Installation
Replacing your PCM is easier than you might think. Because we program it for you, there are no special tools or dealer visits required. This is a true plug-and-play repair.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the PCM: On most of these vehicles, the PCM is located in the engine compartment, often inside the air filter housing or mounted to the fender wall. It’s a silver metal box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old PCM from its mounting bracket.
- Install the New Module: Bolt the new PCM into place. Firmly and carefully reconnect the wiring harnesses, ensuring the locking tabs click into place.
- Final Step: Reconnect the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes. Your vehicle’s service manual will have the specific, simple steps.
Verified Vehicle Compatibility
This module is a direct replacement for service number 09356741 and is also compatible with part numbers 16236757, 9357034, 9357440, and 9366314. It is designed for a wide range of 1998 and 1999 GM vehicles. Please provide your VIN upon purchase to guarantee perfect programming and compatibility.
ALERO 99 (LH center dash), 3.4L, ID 16236757, 9356741, 9357440, 9366314, 9357034
BONNEVILLE 98
CAMARO 98 (6-231, 3.8L)
CENTURY 98 (6-191, 3.1L)
CUTLASS 98
CUTLASS 99 (LH center dash), ID 16236757
EIGHTY EIGHT 98
FIREBIRD 98 (6-231, 3.8L)
GRAND AM 98 (6-191, 3.1L)
GRAND AM 99 (LH center dash), 3.4L, ID 16236757, 9356741, 9366314, 9357034, 9347440
GRAND PRIX 98
INTRIGUE 98
LESABRE 98 (6-231, 3.8L)
LUMINA CAR 98 (LH engine compartment)
MALIBU 98 (6-191, 3.1L)
MONTE CARLO 98
PARK AVENUE 98 (6-231, 3.8L)
REGAL 98
RIVIERA 98 (6-231, 3.8L)
SILHOUETTE 98 (LH engine compartment)
SKYLARK 98 (6-191, 3.1L)
TRANS SPORT 98 (LH engine compartment)
VENTURE 98 (6-207, 3.4L)
Do I need to do any programming myself?
Do I need to do any programming myself?
No. We handle all the programming for you before we ship the part. Simply provide your vehicle’s 17-digit VIN during checkout, and we will flash the module with the latest GM-approved software for your specific car. It arrives ready to install.
Is this a guaranteed fix for my check engine light?
This module will resolve any issues and trouble codes directly caused by a failing PCM, such as internal processor faults (P0601). If your check engine light is on for another reason, like a bad oxygen sensor or catalytic converter, you will still need to address those separate issues.
What is a ‘security relearn’ and is it difficult?
The security relearn procedure syncs the new PCM with your car’s anti-theft system. It’s very simple and requires no tools. The most common method is to turn the ignition key to the ‘ON’ position (without starting the engine) and leave it for 10-15 minutes until the security light on the dash turns off. This process is detailed in your owner’s manual.
Where is my VIN located?
You can find your 17-digit Vehicle Identification Number (VIN) on your vehicle’s registration, your insurance card, or on the driver’s side of the dashboard, visible through the windshield.