Restore Peak Performance to Your GM Vehicle
If you’re wrestling with frustrating issues like a persistent Check Engine Light, erratic engine behavior, poor fuel economy, or even a no-start condition in your GM vehicle, the root cause is often a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, its health is critical. This isn’t just a replacement part; it’s a direct-fit, fully programmed solution designed to get your car running smoothly again, eliminating the need for an expensive trip to the dealership for programming.
We take the guesswork and hassle out of the repair. Simply provide your vehicle’s VIN during checkout, and our technicians will flash this module with the latest, most stable software updates directly from GM. This ensures that your new 1998 Skylark Powertrain Control Module not only matches your vehicle’s specific configuration but also benefits from years of factory-issued performance and reliability improvements. It arrives at your door ready for a straightforward installation.
Case Study: A Tricky Diagnosis
I remember a 1998 Pontiac Grand Prix that came into my bay with a maddeningly intermittent stalling problem. The owner had already replaced the fuel pump and ignition module with no luck. The car would run fine for days, then suddenly die at a stoplight. No specific codes were stored, just a generic history of communication loss. After checking all the wiring, I suspected the PCM. On these older GMs, heat cycles can cause microscopic cracks in the PCM’s circuit board, leading to these exact ghost-in-the-machine problems. We installed a VIN-programmed PCM, and the problem was solved instantly. It’s a classic failure mode I’ve seen dozens of times on this platform.
Is Your GM Vehicle Showing These Signs?
- ✔ Persistent Check Engine Light (CEL)
- ✔ Stored diagnostic trouble codes (DTCs) like P0601 (Internal Memory Fault) or P0606 (PCM Processor Fault)
- ✔ Engine stalling, stumbling, or rough idling
- ✔ Noticeable decrease in fuel efficiency
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Failure to pass state emissions testing
- ✔ Intermittent no-start condition where the engine cranks but won’t fire
Your Straightforward Installation Guide
Installing your new PCM is a job most DIYers can handle in under an hour. Since we program it for you, no special scan tools are required for setup.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the PCM: On most of these vehicles, the PCM is located in the engine compartment, often inside the air filter box assembly for protection. On some models like the Alero or Grand Am, it may be under the dash. A quick search for your specific model will confirm the location.
- Disconnect and Remove: Carefully unplug the electrical harness connectors. They have locking tabs that need to be released. Then, unbolt the module from its mounting bracket.
- Install the New Module: Seat the new 1998 Skylark Powertrain Control Module in the bracket and tighten the bolts. Firmly reconnect the electrical harnesses, ensuring they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Security Relearn: You may need to perform a simple security relearn procedure. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds. Repeat this cycle 3 times. This allows the vehicle’s anti-theft system to recognize the new PCM. Your car should now start and run correctly.
Verified Fitment for a Wide Range of GM Models
This module, service number 9366314, is a direct replacement for a broad family of GM vehicles. It is compatible with part numbers 09356741, 16236757, 9357034, and 9357440. Please verify your vehicle is on the list below.
CENTURY 98 (3.1L), LESABRE 98 (3.8L), PARK AVENUE 98 (3.8L), REGAL 98, RIVIERA 98 (3.8L), SKYLARK 98 (3.1L)
Chevrolet:
CAMARO 98 (3.8L), LUMINA CAR 98, MALIBU 98 (3.1L), MONTE CARLO 98, VENTURE 98 (3.4L)
Oldsmobile:
ACHIEVA 98 (3.1L), ALERO 99 (3.4L), CUTLASS 98-99, EIGHTY EIGHT 98, INTRIGUE 98, SILHOUETTE 98
Pontiac:
BONNEVILLE 98, FIREBIRD 98 (3.8L), GRAND AM 98 (3.1L), GRAND AM 99 (3.4L), GRAND PRIX 98, TRANS SPORT 98
Note: For 1999 Alero, Cutlass, and Grand Am models, please confirm your existing module’s service ID number to ensure compatibility.
By ordering this pre-programmed 1998 Skylark Powertrain Control Module, you’re choosing a reliable, cost-effective solution to restore your vehicle’s proper function and driveability.
Frequently Asked Questions
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will receive an email with instructions. Simply reply to that email with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it.
Is this part difficult to install?
Not at all. This is a plug-and-play part. Basic hand tools are all that’s required to physically swap the module. The only other step is a simple key-cycle security relearn, which requires no tools.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM controls both engine functions and automatic transmission shift points. If the module is failing, it can cause hard shifts, delayed shifting, or hunting for gears. A new, correctly programmed PCM often resolves these issues.
What does ‘flashed with the newest updates’ mean?
Over the life of a vehicle, manufacturers like GM release software updates to fix bugs, improve fuel economy, or enhance transmission performance. We program your module with the latest version available for your specific VIN, ensuring you get the most refined and reliable operation possible.
Do I need to send my old PCM back?
No, there is no core charge or requirement to return your old module. You can keep it or dispose of it responsibly.
Is there a warranty on this part?
Yes, all of our electronic modules come with a warranty that covers any defects in the part or programming. Please see our warranty page for full details and duration.