Restore Your Vehicle’s Heartbeat and Drive with Confidence
Is your Buick or Pontiac feeling tired, unpredictable, or just not itself? A flickering check engine light, frustrating stalls, or erratic shifting can quickly turn a pleasant drive into a stressful ordeal. These aren’t just annoyances; they’re often symptoms of a failing Powertrain Control Module (PCM), the central computer responsible for your vehicle’s engine and transmission performance. Instead of facing a costly and inconvenient trip to the dealership, you have a direct, reliable solution. This engine computer, part number 12616866, arrives at your doorstep fully programmed to your vehicle’s specific Vehicle Identification Number (VIN), ensuring a seamless and effective repair.
Warning Signs and How to Overcome Them
A failing PCM can manifest in numerous ways. Recognizing these symptoms is the first step toward getting your vehicle back to its peak condition. This module is the definitive solution for issues like:
- ✔ Persistent Check Engine Light with codes such as P0601, P0602, P0606, or other internal controller errors.
- ✔ Unexplained stalling or difficulty starting the engine.
- ✔ Harsh, delayed, or erratic automatic transmission shifting.
- ✔ A noticeable drop in fuel economy.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Complete no-start condition where the engine cranks but won’t fire up.
By replacing your old unit with this pre-flashed module, you’re not just clearing codes; you’re restoring the precise calculations and commands that your engine and transmission rely on for smooth, efficient, and dependable operation.
An Expert’s Note: The Relief of a Simple Fix
I remember a customer with a 2007 Grand Prix who was at his wit’s end. His car would randomly stall at traffic lights, and he’d been quoted over a thousand dollars for a new computer plus programming at the dealership. He was skeptical but decided to try one of our pre-programmed units. A few days later, he called back, overjoyed. The installation was straightforward, the car started right up, and the stalling issue was completely gone. He saved hundreds of dollars and, more importantly, regained the confidence to drive his car anywhere without worry. That’s the peace of mind we aim to deliver with every part.
Guided Installation for Your 2006-2009 Allure PCM
You don’t need to be a master mechanic to complete this installation. With basic tools and a little patience, you can have your vehicle running smoothly again. This process is designed to be straightforward, getting you back on the road quickly.
- Safety First: Begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On these GM 3.8L models, the PCM is conveniently located in the lower portion of the air cleaner box assembly in the engine bay.
- Access and Disconnect: Remove the air filter cover and filter to gain access. Carefully unplug the electrical connectors from the old PCM. These connectors have locking tabs that need to be released before they can be pulled out.
- Swap the Units: Unbolt or unclip the old module from its housing and set it aside. Place your new, pre-programmed module into the same position and secure it.
- Reconnect and Reassemble: Firmly plug the electrical connectors into the new PCM until they click into place. Reinstall the air filter and its cover. Reconnect the negative battery terminal.
- Perform Security Relearn: Your vehicle’s anti-theft system needs to sync with the new PCM. This is a simple procedure: Turn the key to the “ON” position (without starting) for 10-15 minutes, then turn it OFF for 10 seconds. Repeat this cycle two more times. On the fourth attempt, the car should start and run normally.
Tailored Fit for Your Ride
This module is a direct replacement for several part numbers and is guaranteed to be compatible with the following vehicles equipped with the 3.8L engine. We program it specifically for your car using the VIN you provide after purchase.
- Buick Allure: 2006, 2007, 2008, 2009 (with 3.8L engine)
- Buick LaCrosse: 2006, 2007, 2008, 2009 (with 3.8L engine)
- Buick Lucerne: 2006, 2007, 2008 (with 3.8L engine)
- Pontiac Grand Prix: 2006, 2007, 2008 (with 3.8L engine)
This part is an exact replacement for part numbers: 12600930, 12616866, 12619810, 12509307. Providing your VIN is essential for us to load the correct, updated software for your vehicle’s specific configuration.
Frequently Asked Questions
What does “VIN Programmed” mean?
It means we load the module with the specific software and calibrations from GM that match your vehicle’s exact features, engine, and transmission. This makes the unit plug-and-play, eliminating the need for expensive programming tools or a visit to a dealership.
Do I need to do anything after installing the new PCM?
Yes. After physical installation, you must perform the vehicle’s security relearn procedure, also known as the Passlock or anti-theft relearn. It’s a simple key-on, key-off process that takes about 30 minutes and requires no special tools. We include instructions for this.
How do I provide my VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number. We cannot ship your part until we have this information to program it correctly.
Will this fix my specific problem or check engine light?
This module is a direct solution for issues caused by a faulty PCM, including common internal processor fault codes. While it resolves a wide range of symptoms, it’s always best to have your vehicle properly diagnosed to ensure the PCM is the root cause of the problem.
My original part number isn’t an exact match, but it’s on the list. Will this work?
Yes. Manufacturers often update part numbers over time. The numbers listed (12600930, 12616866, 12619810, 12509307) are interchangeable for the specified vehicles. As long as your vehicle is on the compatibility list, this module, once programmed to your VIN, will be the correct replacement.