End Your Engine Troubles with a Plug-and-Play Solution
Is your Buick or Pontiac running rough, stalling unexpectedly, or displaying a persistent check engine light? A faulty Powertrain Control Module (PCM) is often the culprit behind these frustrating and unpredictable issues. Instead of dealing with diagnostic dead-ends and expensive dealership visits, take control of your repair with this engine computer, programmed specifically for your vehicle. It arrives ready to install, restoring your car’s reliability and getting you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing PCM is the likely cause. This pre-programmed unit is the definitive solution for:
- Erratic or rough idling
- Engine stalling or cutting out while driving
- Failure to start, even with a good battery and starter
- Poor fuel economy
- Check Engine Light with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0605, or P0606
- Transmission shifting problems or harsh engagement
Our process eliminates the guesswork. By providing your Vehicle Identification Number (VIN) during checkout, you receive a module that is a perfect match for your car’s factory settings. This is the most reliable way to fix the core problem, not just the symptoms. The 2006-2009 Buick LaCrosse PCM 12616866 is your direct path to a smooth-running engine.
Features & Benefits
- โ Plug & Play Installation: Arrives ready to install with the latest GM software updates for your specific VIN. No expensive trip to the dealership for programming is required.
- โ Guaranteed Compatibility: A direct-fit replacement for your 2006-2009 Buick LaCrosse, Lucerne, Allure, or 2006-2008 Pontiac Grand Prix with the 3.8L engine.
- โ Restores Peak Performance: Corrects common issues like rough idling, stalling, poor fuel economy, and false sensor codes, bringing back your car’s original drivability.
- โ Updated GM Software: Programmed with the most current factory calibrations from General Motors to improve performance and efficiency over the original software.
- โ One-Year Replacement Warranty: Drive with confidence knowing this unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
A common mistake is buying a used PCM from a junkyard. While it might look identical, it’s programmed for a different vehicle with different options. This almost always leads to a no-start condition, multiple warning lights, and a wasted afternoon. Your car’s Vehicle Anti-Theft System (VATS) will not recognize the foreign module. Our VIN-specific programming ensures the module communicates perfectly with your car’s security system, transmission, and BCM right out of the box. This is the crucial difference between a 15-minute repair and a major headache.
This module, also known as an ECM or ECU, serves as the brain of your vehicle’s engine. When it fails, it can create a cascade of problems that are difficult to diagnose. By replacing it with a correctly programmed unit like this 2006-2009 Buick LaCrosse PCM 12616866, you are ensuring all engine and transmission parameters are set exactly to factory specifications for a lasting, reliable repair.
Frequently Asked Questions
Do I need to have this programmed by a dealer or mechanic?
No. This PCM comes fully programmed to your vehicle’s VIN before it is shipped. It is ready for installation right out of the box. In most cases, you will only need to perform a simple security relearn procedure, which can be done without any special tools.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We will provide clear instructions on how to submit this information to us so we can program your module accurately before shipping.
Will this fix my specific check engine light codes?
This module is a direct solution for internal PCM failure codes, such as P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault). If your codes are related to a faulty sensor or wiring, you must fix those issues as well. A new PCM will not fix a bad oxygen sensor, for example.
Where is this part located on my car?
On the specified Buick and Pontiac models with the 3.8L engine, the Electronic Control Module is typically found attached to the lower part of the air cleaner box/housing in the engine bay.
Is this compatible with other part numbers?
Yes, this unit is a direct replacement for part numbers 12600930, 12616866, 12619810, and 12509307. We use your VIN to ensure the programming is a perfect match for your vehicle’s original build.