Is Your 1997 LeSabre Running Rough, Stalling, or Throwing Confusing Codes?
If you’re dealing with frustrating issues like a persistent check engine light, erratic engine behavior, poor fuel economy, or harsh transmission shifts, the root cause is often the vehicle’s brain: the Powertrain Control Module (PCM). For the dependable 1997 Buick LeSabre, a failing PCM can turn a reliable car into a source of constant headaches. After 20+ years in the shop, I’ve seen how a faulty module can mimic a dozen other problems, leading to expensive and unnecessary repairs on perfectly good sensors and mechanical parts.
A Technician’s Real-World Experience
“A customer’s 1997 Buick Regal with the 3.8L engine—the same powertrain as your LeSabre—came into my bay last month. It had an intermittent no-start condition and would occasionally stall at red lights. The owner had already replaced the crank sensor and fuel pump with no luck. After confirming solid fuel pressure and spark, we hooked up our diagnostic tools. The data stream from the PCM was dropping out intermittently. We installed a correctly programmed PCM, and the car has run flawlessly ever since. This isn’t just a part; it’s the definitive solution to a very common and tricky electronic failure.”
The Direct-Fit Solution: A Programmed 1997 LeSabre 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 official GM software updates, specifically calibrated to your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures that all engine and transmission parameters are set perfectly for your LeSabre, restoring its original performance and reliability.
Key Benefits of This VIN-Programmed Module:
- ✔ Solves Common Failure Symptoms: A direct fix for issues like random misfire codes (P0300), no-start conditions, communication errors with scan tools, and erratic transmission behavior.
- ✔ Programmed Specifically for You: Simply provide your VIN during checkout, and we handle all the programming. The module arrives ready to install, saving you a costly trip to the dealership.
- ✔ Latest GM Software: Your module will be loaded with the most current software available from General Motors, which often includes fixes for drivability issues that were discovered after the car left the factory.
- ✔ Guaranteed Compatibility: This module is a direct replacement for part numbers 16218070 and 16217058.
Simple, DIY-Friendly Installation Guide
You don’t need to be a master technician to replace your PCM. With basic hand tools, you can get your LeSabre back on the road in under an hour.
- Safety First: Disconnect the negative terminal from your car’s battery and secure it away from the post.
- Locate the PCM: On most 1997 GM vehicles like the LeSabre, the PCM is located in the engine bay, typically inside the air filter housing. You may need to remove the air filter cover to access it.
- Disconnect Harnesses: Carefully unclip and disconnect the electrical wiring harnesses from the old module. Inspect the pins on the harness connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Seat your new, pre-programmed PCM into the mounting bracket and secure it. Reconnect the wiring harnesses, ensuring they click firmly into place.
- Reconnect Battery: Re-install the air filter housing components and reconnect the negative battery terminal. The vehicle is now ready to start.
Will This Fit My Vehicle?
This Powertrain Control Module is a confirmed fit for the 1997 Buick LeSabre with the 3.8L (6-231) engine. It also fits a wide range of other 1997 GM models. Please verify your part number and check the list below to ensure compatibility.
- ACHIEVA 97 Electronic Control Module; 6-191 (3.1L)
- BONNEVILLE 97 Electronic Control Module; (6-231, 3.8L), w/o supercharged option
- CENTURY 97 Electronic Control Module; (6-191, 3.1L)
- CUTLASS 97 Electronic Control Module; Supreme
- EIGHTY EIGHT 97 Electronic Control Module; (6-231, 3.8L), w/o supercharged option
- GRAND AM 97 Electronic Control Module; 6-191 (3.1L)
- GRAND PRIX 97 Electronic Control Module; 6-191 (3.1L) or 6-231 (3.8L), w/o supercharged option
- LUMINA CAR 97 Electronic Control Module; 6-191 (3.1L)
- MONTE CARLO 97 Electronic Control Module; 6-191 (3.1L)
- REGAL 97 Electronic Control Module; (6-231, 3.8L), w/o supercharged option
- SILHOUETTE 97 Electronic Control Module; (6-207, 3.4L)
- SKYLARK 97 Electronic Control Module; 6-191 (3.1L)
- TRANS SPORT 97 Electronic Control Module; (6-207, 3.4L)
- VENTURE 97 Electronic Control Module; (6-207, 3.4L)