Is Your 1997 GM Vehicle Plagued by Mysterious Issues?
If you’re dealing with a frustrating check engine light, erratic engine performance, transmission shifting problems, or even a no-start condition in your 1997 Monte Carlo or other compatible GM vehicle, a failing Powertrain Control Module (PCM) is often the culprit. Over my 20+ years in the shop, I’ve seen how a faulty computer can turn a reliable car into a source of constant headaches. It’s the brain of your vehicle, and when it starts to fail, it can manifest in ways that are often misdiagnosed, leading to wasted time and money on unnecessary parts.
The Direct Solution: A VIN-Programmed 1997 Monte Carlo PCM
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a quality, tested PCM and flash it with the latest GM-certified software specific to your vehicle’s Vehicle Identification Number (VIN). This critical step ensures that the module communicates perfectly with your engine, transmission, and all other onboard systems, restoring the original performance and efficiency your car had when it left the factory.
Expert Pro Tip: Check Your Connectors First!
Before you condemn your old PCM, take a moment to inspect the electrical connectors that plug into it. Over two decades, moisture and vibrations can cause corrosion on the pins. I’ve seen many cases where a simple cleaning with a contact cleaner and a small brush restored the connection and fixed the problem. A green or white crusty buildup is a dead giveaway. Performing this check can sometimes save you the cost of a new part.
Common Symptoms of a Failing Powertrain Control Module:
- ✔ Persistent Check Engine Light (CEL) with various trouble codes
- ✔ Vehicle will not start or stalls intermittently
- ✔ Poor or declining fuel economy
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Failed emissions test
- ✔ Communication errors with diagnostic scan tools
Plug-and-Play Installation Guide
You don’t need to be a master mechanic or pay for a tow to the dealership. Installing this module is a straightforward process you can do in your own driveway.
- 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 GM vehicles, the PCM is located in the engine bay, often inside the air filter box housing for protection.
- Disconnect the Old Module: Carefully unplug the electrical wiring harnesses. There are typically release tabs that need to be pressed or lifted. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket.
- Install the New Module: Seat your new, pre-programmed PCM into the mounting bracket and secure it.
- Reconnect Everything: Firmly plug the wiring harnesses into the new module until they click into place. Reconnect your negative battery terminal.
- Final Step: Your vehicle is now ready to start. The security system may require a simple relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.
This Module is a Direct Replacement for Part Numbers:
This unit is compatible with and replaces the following original GM part numbers: 16217058 and 16218070. Please verify one of these numbers is on your current module to ensure compatibility.
BONNEVILLE 97 (3.8L, 6-231), w/o supercharged option
CENTURY 97 (3.1L, 6-191)
CUTLASS 97 Supreme
EIGHTY EIGHT 97 (3.8L, 6-231), w/o supercharged option
GRAND AM 97 (3.1L, 6-191)
GRAND PRIX 97 (3.1L, 6-191)
GRAND PRIX 97 (3.8L, 6-231), w/o supercharged option
LESABRE 97 (3.8L, 6-231)
LUMINA CAR 97 (3.1L, 6-191)
MONTE CARLO 97 (3.1L, 6-191)
REGAL 97 (3.8L, 6-231), w/o supercharged option
SILHOUETTE 97 (3.4L, 6-207)
SKYLARK 97 (3.1L, 6-191)
TRANS SPORT 97 (3.4L, 6-207)
VENTURE 97 (3.4L, 6-207)