Restore Peak Performance to Your 1997 GM Vehicle
Is your trusty 1997 Buick LeSabre, Pontiac Grand Prix, or another GM classic suddenly running rough, stalling, or refusing to start? Before you suspect a major mechanical failure, the problem often lies with a faulty Powertrain Control Module (PCM). As the electronic brain of your engine and transmission, a failing PCM can cause a host of frustrating and hard-to-diagnose issues. This replacement PCM, part number 16218070, is the reliable, straightforward solution to get your vehicle running smoothly again.
Over my 20+ years in automotive diagnostics, I’ve seen countless vehicles sidelined by internal PCM faults. The symptoms can mimic everything from a bad fuel pump to a failed sensor, leading to wasted time and money on incorrect repairs. This module solves the problem at its source. We take the guesswork out of the equation by pre-programming this 1997 LeSabre PCM to your vehicle’s specific Vehicle Identification Number (VIN). This ensures it has the latest GM software updates for optimal fuel economy, emissions control, and transmission shifting. It arrives at your door ready to install, no expensive dealership programming required.
Case Study: A Tricky Diagnosis
I recall a 1997 Bonneville with the 3.8L V6 that came into the shop on a tow truck. The owner had already replaced the fuel pump and filter, but the engine would only crank, never start. We checked for spark and fuel pressure, which were both present but weak and inconsistent. A scan tool showed no communication with the PCM. After confirming power and ground to the module were good, we knew the PCM itself had failed internally. We installed a VIN-programmed module just like this one, and the car fired up on the first try. It’s a classic failure mode for these units, and this part is the definitive fix.
Common Signs of a Failing PCM
If your vehicle is experiencing any of the following, a faulty engine computer could be the culprit. Replacing your failing unit with this 1997 LeSabre PCM can resolve these problems:
- âś” Check Engine Light is on with communication error codes (like U-codes) or internal fault codes (P0601, P0605, P0606).
- âś” Engine stalling, stumbling, or running rough for no apparent reason.
- âś” A no-start or hard-starting condition, even with a good battery and starter.
- âś” Noticeable decrease in fuel mileage.
- âś” Harsh or erratic automatic transmission shifting.
- âś” Failure to pass an emissions test.
A Straightforward Guide to Installation
This is a job most DIY enthusiasts can handle in their own driveway. The key is the VIN-specific programming we do beforehand, making the physical swap simple.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: On most of these 1997 GM models, the PCM is located inside the air filter housing. You will need to open the airbox to access it.
- Disconnect the Harnesses: Carefully unplug the electrical wiring harnesses connected to the old module. There are typically release tabs that need to be pressed or lifted.
- Remove the Old Module: Unbolt or unclip the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New PCM: Mount your new, pre-programmed PCM in place and securely reconnect the wiring harnesses. Ensure they click into place.
- Reconnect the Battery: Re-attach the negative battery terminal. The vehicle may need to complete an idle relearn procedure, which usually involves letting it run for a few minutes.
Verified Vehicle Compatibility
This module is a direct-fit replacement for part numbers 16218070 and 16217058. It is guaranteed to fit the following 1997 models with the specified options:
- âś” Achieva: 1997 (3.1L V6)
- âś” Bonneville: 1997 (3.8L V6, w/o supercharger)
- âś” Century: 1997 (3.1L V6)
- âś” Cutlass: 1997 (Supreme)
- âś” Eighty Eight: 1997 (3.8L V6, w/o supercharger)
- âś” Grand Am: 1997 (3.1L V6)
- âś” Grand Prix: 1997 (3.1L V6 or 3.8L V6, w/o supercharger)
- âś” LeSabre: 1997 (3.8L V6)
- âś” Lumina Car: 1997 (3.1L V6)
- âś” Monte Carlo: 1997 (3.1L V6)
- âś” Regal: 1997 (3.8L V6, w/o supercharger)
- âś” Silhouette: 1997 (3.4L V6)
- âś” Skylark: 1997 (3.1L V6)
- âś” Trans Sport: 1997 (3.4L V6)
- âś” Venture: 1997 (3.4L V6)
Order your 1997 LeSabre PCM today and restore your vehicle’s reliability and performance with confidence.
Do I need to do any programming after I receive this module?
Do I need to do any programming after I receive this module?
No. This module is fully programmed to your vehicle’s VIN before we ship it. It is ready for installation right out of the box, saving you a trip to the dealer and expensive programming fees.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it.
Will this fix my ‘Check Engine’ light?
If the check engine light is caused by an internal failure of the PCM (common codes include P0601-P0606), then this replacement part will solve the problem. You should always perform a proper diagnosis to confirm the PCM is the root cause before ordering.
Is this a brand new part?
This is a high-quality, tested replacement component that has been programmed with the latest software from GM. It is built to meet or exceed original equipment specifications for performance and longevity.
What if my part number is 16217058?
This module, 16218070, is a fully compatible and direct replacement for part number 16217058. It will function identically once programmed to your VIN.