Is Your GM Vehicle Running Rough? Get a Reliable, Programmed Solution.
If you’re dealing with a frustrating check engine light, stalling, erratic shifting, or a no-start condition in your Oldsmobile Achieva, Chevy S10, Pontiac Grand Am, or other compatible GM vehicle, a failing Powertrain Control Module (PCM) is often the culprit. After 20+ years on the road, the original electronics are prone to failure from heat and vibration. This isn’t just an inconvenience; it affects your vehicle’s performance, fuel economy, and reliability. This replacement PCM is the straightforward, dependable fix you need.
A Technician’s Real-World Experience
“A customer’s 1998 Pontiac Grand Am with the 2.4L engine came into my shop last month with a problem that was driving him crazy. It would stall intermittently at stoplights, but never throw a consistent code. We checked everything—fuel pressure, sensors, wiring—and found nothing. On a hunch, based on seeing this hundreds of times on these mid-90s GM platforms, we swapped in a known-good PCM. The problem vanished instantly. The original module’s internal processors were failing under heat load, a classic symptom for these units. This isn’t something you can see; it’s a failure you diagnose by experience.”
The Modern Fix for a Classic Problem: The 1997-1998 Achieva PCM
Don’t settle for guesswork or expensive diagnostic fees at a dealership. We take the complexity out of the repair. When you order this module, we flash it with the latest official GM software calibrated specifically for your vehicle’s VIN. This ensures all engine and transmission parameters are correct right out of the box. It arrives ready to install, saving you time, money, and the hassle of a tow to the dealer.
Key Symptoms This Part Corrects:
- ✔ Persistent Check Engine Light (CEL)
- ✔ Vehicle refuses to start or has hard starting issues
- ✔ Stalling or rough idling, especially when warm
- ✔ Poor acceleration and reduced engine power
- ✔ Decreased fuel mileage
- ✔ Communication errors with scan tools
Plug-and-Play Installation: No Dealer Visit Required
Installing your replacement PCM is a simple process you can do with basic hand tools. Follow these steps to get your vehicle running smoothly again.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On most of these vehicles (like the S10, Cavalier, and Sunfire), the PCM is located in the engine bay, often on the passenger side near the firewall or fender. On others (like the Grand Am or Malibu), it may be under the dash.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old PCM. Inspect the terminals for any corrosion or damage.
- Remove Old PCM: Unbolt the old module from its mounting bracket and remove it from the vehicle.
- Install New PCM: Mount your new, pre-programmed PCM onto the bracket and securely reconnect the wiring harnesses. Ensure they click into place.
- Reconnect Battery: Reattach the negative battery terminal. Your vehicle is now ready to start.
Guaranteed Compatibility and VIN Programming
This module is a direct replacement for service numbers 16228016, 8162280160, and 16245305. To ensure perfect compatibility, you must provide your 17-digit VIN after purchase. This allows us to load the precise software your vehicle needs for optimal function.
This Part Fits The Following Vehicles:
- 1997-1998 Oldsmobile Achieva (2.4L)
- 1997-1998 Buick Skylark (2.4L)
- 1997-1999 Pontiac Sunfire (2.2L & 2.4L)
- 1997-1999 Chevrolet Cavalier (2.2L & 2.4L)
- 1997-1999 Pontiac Grand Am (2.4L)
- 1997-1999 Chevrolet Malibu (2.4L)
- 1997-2000 Chevrolet S10 / GMC Sonoma (2.2L)
- 1996-2000 Isuzu Hombre (2.2L)