Is Your GM Vehicle Running Rough? Get a Reliable Solution.
If you’re dealing with a frustrating no-start condition, intermittent stalling, poor fuel economy, or a persistent Check Engine Light on your 1997 GM car or van, a failing Powertrain Control Module (PCM), also known as an Electronic Control Module (ECM), is a very likely culprit. Over my 20+ years in the shop, I’ve seen these exact symptoms hundreds of times on vehicles with the 3.1L, 3.4L, and 3.8L engines. The original modules can fail from heat cycles, vibration, and age, leading to unpredictable and unsafe driving conditions.
Don’t let a faulty computer keep you off the road. This is a direct-fit replacement ECM, part number 16218070, that restores the critical communication between your engine and transmission.
The Easiest Way to Replace Your 1997 Skylark ECM
The biggest headache with replacing an ECM is the programming. A blank module from the dealer won’t work—it needs to be programmed with special equipment, costing you time and hundreds of dollars in labor. We eliminate that completely. When you purchase from us, we flash the module with the latest GM-certified software using your vehicle’s specific Vehicle Identification Number (VIN). It arrives at your door ready to install, no dealer visit necessary.
- ✔ VIN Programmed Service: We handle all the programming before we ship. Just provide your VIN at checkout.
- ✔ Restores Performance: Solves common issues like harsh shifting, engine stumbling, and false sensor codes.
- ✔ Saves Time and Money: A true plug-and-play solution that avoids expensive dealership programming fees.
- ✔ Broad Compatibility: A direct replacement for part numbers 16218070 and 16217058.
Expert Pro Tip: Check Your Grounds Before You Swap
Before you condemn your old ECM, take 10 minutes to check the main engine-to-chassis ground strap. On these GM platforms, a corroded or loose ground can cause voltage drops that mimic a bad computer, throwing all sorts of strange codes. It’s a simple check that has saved my customers from replacing a part that wasn’t actually faulty. A clean, tight connection is critical for any computer module to function correctly.
Plug-and-Play Installation: No Dealer Visit Required
You can get your vehicle running right again in your own driveway. Follow these simple steps to install your new module.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On most of these vehicles, the ECM is located in the engine bay, often inside the air filter housing or mounted to the firewall.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. Inspect the pins for any corrosion and clean them with an electrical contact cleaner if necessary.
- Remove Old Module: Unbolt the old ECM from its mounting bracket and remove it from the vehicle.
- Install New Module: Mount your new, pre-programmed ECM in the same location and securely fasten it.
- Reconnect Everything: Plug the wiring harnesses back into the new module until they click into place. Reconnect your negative battery terminal.
- Final Step: Start the vehicle. It may run slightly rough for the first few minutes as the system completes its internal checks. Let it idle for 5-10 minutes. Your Check Engine Light should be off and the vehicle should run smoothly.
Guaranteed Fitment for Your Vehicle
This module is the correct replacement for a wide range of 1997 General Motors vehicles. Please confirm your model and engine below to ensure compatibility. This part directly replaces part numbers 16217058 and 16218070.
- Achieva: 1997 (3.1L V6)
- Bonneville: 1997 (3.8L V6, w/o supercharger)
- Century: 1997 (3.1L V6)
- Cutlass: 1997 (Supreme models)
- Eighty Eight: 1997 (3.8L V6, w/o supercharger)
- Grand Am: 1997 (3.1L V6)
- Grand Prix: 1997 (3.1L V6 or 3.8L V6, w/o supercharger)
- LeSabre: 1997 (3.8L V6)
- Lumina Car: 1997 (3.1L V6)
- Monte Carlo: 1997 (3.1L V6)
- Regal: 1997 (3.8L V6, w/o supercharger)
- Silhouette: 1997 (3.4L V6)
- Skylark: 1997 (3.1L V6)
- Trans Sport: 1997 (3.4L V6)
- Venture: 1997 (3.4L V6)