Is Your Late-90s GM Vehicle Running Rough?
If you’re dealing with a frustrating no-start condition, intermittent stalling, erratic transmission shifting, or a check engine light that just won’t go away, the problem often points directly to a failing Powertrain Control Module (PCM). In my 20+ years as a technician, I’ve seen these exact symptoms on countless GM cars from this era, from the Oldsmobile Intrigue to the Pontiac Grand Prix. The PCM is the brain of your vehicle, and when it falters, it can create a cascade of confusing and costly issues.
A Real-World Scenario from the Shop
“Just last month, a 1998 Pontiac Grand Prix was towed in. The owner had already replaced the fuel pump and filter, chasing an intermittent stalling problem that left him stranded twice. His scanner showed a few random codes, but nothing consistent. After hooking up my professional scan tool and monitoring live data, I saw the 5-volt reference signal to the sensors intermittently dropping out—a classic sign of an internal PCM failure. We installed one of our pre-programmed modules, and the car has been running perfectly ever since. This simple check saved him from replacing more unnecessary parts.”
The Direct Solution: A VIN-Programmed 1998 Intrigue Powertrain Control Module
Don’t guess or keep throwing parts at the problem. This Powertrain Control Module is the reliable, straightforward fix you need. We take all the complexity out of the process. When you order, simply provide us with your vehicle’s VIN, and our experts will program the module with the latest official GM software specifically for your car. It arrives at your door ready to install, with no expensive dealer visit or special tools required.
- ✔ VIN Programmed & Ready to Install: We flash the unit with your vehicle’s specific calibration files.
- ✔ Latest GM Software Updates: Solves many factory-known drivability issues and improves performance.
- ✔ No Complicated Security Relearn: On most of these 98-99 models, the security relearn is a simple key-on procedure, not a complex dealer-level task.
- ✔ Restores Original Functionality: Fixes common issues like harsh shifting, poor fuel economy, and false sensor codes.
Plug-and-Play Installation: Get Back on the Road Fast
You can do this job right in your driveway with basic hand tools. While the exact location can vary slightly between models (some are in the engine bay air filter housing, others are under the dash), the process is generally the same.
- Safety First: Disconnect the negative terminal from your car’s battery.
- Locate the PCM: Find the existing module on your vehicle. On many models like the Grand Prix or Intrigue, it’s located inside the plastic airbox assembly in the engine bay.
- Disconnect the Connectors: Carefully unclip the wiring harness connectors. They often have locking tabs that need to be released. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the PCM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed PCM into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock.
- Reconnect Battery: Re-attach the negative battery terminal.
- Perform Security Relearn (If Needed): Turn the key to the ‘ON’ position (without starting) for 10-15 minutes. Turn it off for 10 seconds, then repeat two more times. After the third cycle, the vehicle should start and run normally.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM vehicles and is compatible with numerous original service numbers. Please verify your part number or contact us if you’re unsure.
Replaces Part Numbers: 09356741, 16236757, 9357034, 9357440, 9366314
This part will fit these makes and models with these options:
- ACHIEVA 98 (3.1L)
- ALERO 99 (3.4L)
- BONNEVILLE 98
- CAMARO 98 (3.8L)
- CENTURY 98 (3.1L)
- CUTLASS 98-99
- EIGHTY EIGHT 98
- FIREBIRD 98 (3.8L)
- GRAND AM 98-99 (3.1L, 3.4L)
- 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)