Restore Your Vehicle’s Performance and Reliability
Is your 2005 Buick or Pontiac suffering from erratic engine behavior, a persistent check engine light, or frustrating no-start conditions? A failing Powertrain Control Module (PCM) is often the hidden culprit, leaving you stranded and stressed. This pre-programmed Engine Control Module is your direct, reliable solution to restore your vehicle’s performance and your peace of mind. We take the guesswork out of the repair by flashing the unit with the latest GM software updates, specifically matched to your car’s VIN before it ships.
Common Symptoms & Your Solution
A faulty PCM can manifest in numerous ways, often mimicking other sensor failures. If you’re experiencing any of the following, a failing computer is a likely cause:
- Persistent Check Engine Light (CEL) with communication codes like P0601, P0605, or P0606
- Poor or declining fuel economy
- Engine stalling, stumbling, or rough idling
- Harsh or erratic automatic transmission shifting
- The engine cranks but refuses to start
- Unexplained loss of power and acceleration
This module is the definitive solution. Instead of gambling on a used part from a junkyard or paying steep dealership prices for programming, you get a fully updated and tested unit that is ready for installation right out of the box. This is the most efficient way to get your car running right and solve those nagging electronic issues for good. By installing a properly programmed 2005 Buick Allure PCM, you are restoring the central command center of your vehicle’s engine and transmission.
Features & Tangible Benefits
- ✔ Plug & Play Installation: Arrives pre-programmed to your vehicle’s specific VIN. No need for an expensive trip to the dealership for programming.
- ✔ Optimized Performance: Flashed with the newest GM software updates to improve fuel efficiency, shifting, and overall engine operation.
- ✔ Guaranteed Compatibility: A direct-fit replacement for part numbers 19210068 and 12591278 in your 2005 LaCrosse, Grand Prix, or Allure with the 3.8L engine.
- ✔ Eliminate Driveability Problems: The definitive fix for common issues like stalling, rough idling, and communication error codes (DTCs).
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
Our technicians often see vehicles where a generic, non-programmed module was installed, leading to a cascade of new problems. The complex systems in your GM vehicle—from the engine and transmission to the anti-lock brakes—all communicate through the PCM. Programming a 2005 Buick Allure PCM to your specific VIN isn’t just a suggestion; it’s essential for ensuring all systems work together in perfect harmony as the manufacturer intended. This crucial step is what separates a temporary fix from a lasting, reliable repair that you can depend on every day.
Frequently Asked Questions
Do I need to get this programmed by a dealer?
No. This module arrives pre-programmed to your vehicle’s VIN and is ready for installation upon arrival. This saves you the time, hassle, and expense of a dealership visit.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will reach out with instructions, or you can message us directly with the information. We cannot ship the part until we have your VIN to program it.
Is this the right part for my car?
This PCM is a direct fit for the 2005 Buick Allure, Buick LaCrosse, and Pontiac Grand Prix equipped with the 3.8L engine. Providing your VIN during checkout guarantees we send you the correctly programmed module for your exact vehicle.
What if my original part number is 12591278?
This module is the correct service replacement for both original part numbers 19210068 and 12591278. They are interchangeable, and this unit will function perfectly in place of either.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM (common codes include P0601-P0606), this part will solve the problem. However, it’s always best to have your vehicle properly diagnosed to ensure the PCM is the root cause of the issue.
Is any additional setup required after installation?
In some cases, a security relearn procedure (also known as a Passlock or anti-theft relearn) may be necessary after installation. This procedure can typically be performed without any special tools and instructions are widely available online or in your vehicle’s service manual.