2006-2008 Buick Lucerne PCM 3.8L Engine Computer 12616866

Is Your Buick Lucerne or GM 3.8L Vehicle Running Poorly?

If you’re experiencing frustrating issues like a persistent check engine light, rough idling, unexpected stalling, or even a complete failure to start, the problem often points to a failing Powertrain Control Module (PCM). The PCM is the central computer of your vehicle, managing everything from fuel injection and spark timing to transmission shifting and emissions control. When it begins to fail, it can cause a wide range of performance problems that can make your car unreliable and unsafe to drive. Don’t let a faulty computer keep you off the road. This is the direct-fit, reliable solution you need to restore your vehicle’s performance and peace of mind.

Why Choose Our Pre-Programmed 2006-2008 Lucerne PCM?

This isn’t just a replacement part; it’s a complete solution. We take the guesswork and extra expense out of the repair process. Each module, including part numbers 12616866, 12600930, 12619810, and 12509307, is meticulously programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the computer has the correct software and calibrations for your car’s exact configuration, including its engine, transmission, and factory options. We flash the unit with the latest GM-released software updates, which can often resolve underlying drivability issues that were present even before the original module failed. This means you get a component that is ready for installation right out of the box, saving you a costly trip to the dealership for programming.

Common Symptoms of a Failing 3.8L PCM

• ✔ Check Engine Light: The most common sign, often with communication error codes (like U-codes) or processor fault codes (P0600-P0606).
• ✔ Engine Stalling or Misfiring: The engine may stall intermittently, especially when coming to a stop, or you may feel random misfires while driving.
• ✔ Poor Fuel Economy: A failing PCM can’t efficiently manage the engine’s fuel delivery, leading to a noticeable drop in MPG.
• ✔ Erratic Transmission Shifting: You might experience harsh shifts, delayed engagement, or the transmission getting stuck in one gear (limp mode).
• ✔ No-Start Condition: In severe cases, the PCM may fail to power up the fuel pump or ignition system, preventing the engine from starting at all.
• ✔ Failed Emissions Test: Incorrect engine management will almost certainly lead to a failed smog or emissions inspection.

Guaranteed Fitment for Your GM Vehicle

This electronic control module is a direct replacement for the original unit on several popular GM vehicles equipped with the venerable 3.8L V6 engine. The module is typically located in the lower part of the air cleaner box for easy access. Please verify your vehicle is on the list below:

• Buick Lucerne: 2006, 2007, 2008 (with 3.8L engine)
• Buick LaCrosse: 2006, 2007, 2008, 2009 (with 3.8L engine)
• Buick Allure: 2006, 2007, 2008, 2009 (with 3.8L engine)
• Pontiac Grand Prix: 2006, 2007, 2008 (with 3.8L engine)

Our commitment is to get you the right part, the first time. By providing your VIN during checkout, you ensure that the 2006-2008 Lucerne PCM you receive is perfectly matched to your vehicle’s requirements, making the installation process as smooth as possible.