Is Your GM Vehicle Running Rough, Stalling, or Refusing to Start?
If you’re dealing with a frustrating check engine light, erratic engine behavior, or a complete no-start condition in your late-90s GM car or truck, the problem often points directly to a failing Powertrain Control Module (PCM). As a mechanic with over two decades of diagnostic experience, I’ve seen these symptoms countless times. A faulty PCM can send you chasing phantom sensor codes and replacing perfectly good parts, costing you time and money. It’s the brain of your engine, and when it malfunctions, the entire system suffers.
The Direct Solution for Common PCM Failure Symptoms
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a quality-tested PCM, part number 16245305, and flash it with the latest official GM software updates, specifically calibrated to your vehicle’s unique Vehicle Identification Number (VIN). This process ensures seamless communication between the module and your vehicle’s systems, restoring original performance and reliability.
Stop guessing and fix the root cause of issues like:
- ✔ Persistent Check Engine Light (CEL) with various codes
- ✔ Rough or unstable idling
- ✔ Poor fuel economy
- ✔ Engine stalling or cutting out while driving
- ✔ Harsh or incorrect shifting
- ✔ Complete no-start condition where the engine cranks but won’t fire
- ✔ Communication errors with diagnostic scan tools
Expert Pro Tip: Check Your Connectors First!
Before you even unbolt the old PCM, take a close look at the wiring harness connectors. Over 20+ years, moisture and dirt can cause significant corrosion on the pins, both on the harness side and the module itself. I’ve seen vehicles towed in as “no-starts” where the only issue was a green, corroded pin preventing a good connection. Use a dedicated electronics contact cleaner and a small nylon brush to gently scrub the pins on the harness plugs. This simple 5-minute check can sometimes save you from replacing a module that isn’t actually faulty and ensures your new PCM has a perfect connection.
Why Our VIN-Programmed 1997-1998 Skylark PCM is the Right Choice
Getting your vehicle back on the road shouldn’t be a complicated ordeal. A generic, unprogrammed module from a parts store or salvage yard will not start your vehicle. It requires a trip to the dealership for expensive programming. Our service eliminates that step entirely. By providing your VIN at checkout, you receive a module that is truly plug-and-play. The software we install is the most current version available from GM, which often includes vital improvements for fuel management, emissions, and transmission logic that your original module may have lacked.
Simple, DIY-Friendly Installation
You don’t need to be a master technician to install this module. With basic hand tools, you can have your vehicle running correctly in under an hour.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the PCM: On most compatible models (like the S10/Sonoma, Cavalier, and Sunfire), the PCM is located in the engine bay, typically on the passenger side firewall or inner fender. On others (like the Malibu or Grand Am), it may be under the dash.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight off the module. Avoid pulling on the wires themselves.
- Swap the Modules: Unbolt the old PCM from its mounting bracket and set it aside. Mount your new, pre-programmed module in its place.
- Reconnect Everything: Firmly plug the wiring harnesses into the new PCM until they click into place. Reconnect your negative battery terminal.
- Start the Engine: Your vehicle should now start and run correctly with the new module. No further programming is required.
Guaranteed Compatibility
This Electronic Control Module is a direct replacement for units with service numbers 16228016, 8162280160, and 16245305. It fits a wide range of GM vehicles, including the Skylark, Achieva, Cavalier, Grand Am, Malibu, Sunfire, S10/S15 Sonoma, and Isuzu Hombre with the 2.2L or 2.4L 4-cylinder engines. Verify your model and year in the fitment list to ensure a perfect match.