Restore Your Vehicle’s Performance and Reliability
Is your Buick Lucerne, LaCrosse, or Pontiac Grand Prix suffering from frustrating and unpredictable issues? A faulty Powertrain Control Module (PCM) can cause a wide range of problems, from a simple check engine light to a vehicle that refuses to start. If you’re experiencing poor fuel economy, erratic shifting, stalling, or a rough idle, it’s time to replace the brain of your engine. This direct-fit PCM is the definitive solution, arriving at your door fully programmed and ready for a simple, hassle-free installation.
Common Symptoms & Your Direct-Fit Solution
A failing engine computer can manifest in numerous ways, often leading to costly and incorrect diagnoses. This module is the proven fix for issues including:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) related to the processor, such as P0601 or P0606
- Engine stalling or cutting out while driving
- Harsh or unpredictable automatic transmission shifting
- Noticeable decrease in fuel efficiency
- Vehicle entering ‘limp mode’ with reduced power
- Complete no-start condition where the engine cranks but won’t fire
We eliminate the complexity and high cost of a dealership visit. By providing us with your vehicle’s VIN during checkout, we flash this unit with the latest official GM software updates. This ensures your new Programmed Buick Lucerne 3.8L PCM communicates flawlessly with your car’s security system, transmission, and all other onboard electronics right out of the box.
Features & Benefits
- ✔ Plug & Drive Installation: Arrives pre-programmed to your specific VIN. No additional programming or dealer visits are required.
- ✔ Restored Engine Performance: Corrects issues with fuel mixture, ignition timing, and transmission shifting for a smoother, more responsive drive.
- ✔ Latest GM Software: Flashed with the most current updates from General Motors to optimize efficiency and resolve known factory bugs.
- ✔ Guaranteed Compatibility: A direct replacement for part numbers 12600930, 12616866, 12619810, and 12509307 in all specified models.
- ✔ Cost-Effective Solution: Get your car back on the road without paying expensive dealership labor and programming fees.
- ✔ Buy with Confidence: This unit is backed by our one-year replacement warranty, giving you peace of mind on the road.
Expert Insight: The Critical Role of VIN Programming
Many people are tempted to buy a used module from a salvage yard, only to find their car won’t start after installation. This is because the original PCM is electronically ‘locked’ to the donor vehicle’s anti-theft system (VATS/Passlock). Our professional programming service not only matches the module to your car’s VIN but also ensures all specific options—like transmission type and emissions equipment—are correctly configured. This is the secret to a successful, trouble-free repair and why our Programmed Buick Lucerne 3.8L PCM is the superior choice.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. This PCM will arrive at your doorstep fully programmed to the VIN you provide. The installation is a simple plug-and-play process. Just disconnect the battery, swap the modules, and reconnect the battery.
How do I provide you with my vehicle’s VIN?
You can enter your 17-digit VIN in the notes section during checkout. If you forget, don’t worry—we will contact you via email after your purchase to request it before we program and ship your unit.
Is this the correct PCM for my car?
This module fits 2006-2008 Buick Lucerne, 2006-2009 Buick LaCrosse/Allure, and 2006-2008 Pontiac Grand Prix models equipped with the 3.8L V6 engine. It replaces several interchangeable part numbers. As long as your vehicle is on this list, this is the correct computer for you.
Will this fix my check engine light?
If the check engine light and associated codes are being caused by a faulty PCM, then this part will resolve the issue. However, if there are other failing sensors or mechanical problems with your vehicle, the light may remain. This Programmed Buick Lucerne 3.8L PCM will correctly process all sensor inputs once installed.
Where is this module located on my vehicle?
On these specific GM models, the Electronic Control Module (PCM/ECM) is conveniently located in the lower part of the air cleaner box/housing in the engine bay, making it relatively easy to access for replacement.
What if my original part number isn’t an exact match to 12600930?
No problem. This unit is a direct replacement for several part numbers, including 12616866, 12619810, and 12509307. These numbers are fully interchangeable, and our programming ensures it functions perfectly for your specific vehicle.