Is Your GM Running Rough? Get Back on the Road with Confidence.
Is your trusty 1997 GM vehicle suddenly plagued by a persistent check engine light, unpredictable stalling, or rough idling? These frustrating issues often point directly to a failing Powertrain Control Module (PCM), the central computer of your vehicle. This direct-replacement 16217058 PCM is the definitive, hassle-free solution to restore your car’s original performance and reliability, getting you back behind the wheel with peace of mind.
Common Symptoms & Your Solution
A faulty engine computer can cause a cascade of problems that are often misdiagnosed. If you’re experiencing any of the following, a failing PCM is the likely culprit:
- Persistent Check Engine Light (CEL) with various codes
- Engine stalling or cutting out unexpectedly
- Rough or erratic idle
- Poor acceleration and loss of power
- Decreased fuel economy
- Failure to pass emissions testing
- Erratic automatic transmission shifting
Instead of chasing down individual sensors or paying for costly dealership diagnostics, this module provides a complete fix. We take the guesswork out of the repair by pre-programming this 16217058 PCM to your vehicle’s unique Vehicle Identification Number (VIN) before it ships. This ensures it communicates perfectly with your engine, transmission, and security systems right out of the box—no extra trips to the dealer required.
Features & Benefits
- ✔ Programmed to Your VIN: Arrives ready for a plug-and-play installation, eliminating the need for expensive dealership programming or key relearn procedures.
- ✔ Direct-Fit Replacement: Engineered to be a perfect replacement for part numbers 16217058 and 16218070, guaranteeing a seamless fit.
- ✔ Loaded with Latest GM Software: We flash the module with the newest vehicle-specific updates from GM to optimize fuel efficiency, emissions, and engine performance.
- ✔ Solves Driveability Issues: Cures common problems like stalling, rough idle, hesitation, and false sensor codes, restoring smooth and reliable operation.
- ✔ Rigorously Inspected: Each unit undergoes a thorough inspection and testing process to ensure it meets strict quality and performance standards.
- ✔ Protected Purchase: This unit is backed by our one-year replacement warranty.
An Expert’s Note on 90s GM Vehicles
As a technician, I’ve seen countless 1997 models like the Grand Prix or Century come in with mysterious electrical gremlins. The root cause was almost always the PCM. Back then, simply swapping a used computer from another car was a recipe for disaster due to the vehicle’s specific anti-theft system (VATS) and unique engine calibrations. That’s why VIN-specific programming for this 16217058 PCM isn’t just a convenience—it’s essential. It creates a perfect digital handshake between the new module and your car’s existing systems, ensuring a successful repair the first time.
Frequently Asked Questions
Do I need to have this computer programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN during or after checkout, and the module will arrive ready to install.
What information do you need from me?
All we need is your vehicle’s VIN. This allows us to load the correct, updated software from GM so the computer is a perfect match for your car’s engine, transmission, and options.
Is this part difficult to install?
For most of the compatible vehicles, the PCM is located in the engine bay and is relatively easy to access. Installation typically involves disconnecting the battery, unplugging the electrical harnesses from the old unit, unbolting it, and then installing the new one in the reverse order. It’s a job many DIY mechanics can handle with basic tools.
Will this fix my check engine light?
If the check engine light and associated diagnostic trouble codes (DTCs) are being caused by a faulty PCM, this part will resolve the issue. It’s crucial to ensure other components like sensors and wiring are in good condition.
Where can I find my VIN?
Your VIN can be found on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
My original part number is 16218070. Will this fit?
Yes. This computer is a fully compatible and direct replacement for part number 16218070 as well as 16217058.