2009-2011 Buick Lucerne PCM (PCM) 12629019 – Programmed to Your VIN
Imagine cruising down the highway in your 2009-2011 Buick Lucerne, only to have the engine stutter unexpectedly, throwing off your smooth drive. As a seasoned automotive repair advisor with over two decades in diagnostics and parts, I’ve seen this scenario play out too often—usually tied to a faulty Powertrain Control Module (PCM). If you’re dealing with erratic idling, poor fuel efficiency, or mysterious check engine lights, our pre-programmed PCM (part number 12597125, compatible with 12629019) could be the reliable fix you need. We flash it with the latest GM updates using your VIN for a perfect match, ensuring seamless performance right out of the box.
Key Features & Benefits
This PCM stands out because it’s tailored specifically for your vehicle. We program it post-purchase with your VIN, incorporating the newest GM software enhancements to optimize engine management, fuel delivery, and emissions control. Benefits include restored throttle response, better mileage, and elimination of nagging error codes that plague older modules.
- VIN-Specific Programming: Matches your Lucerne’s exact specs, preventing compatibility headaches.
- Latest GM Updates: Addresses known software glitches for smoother operation.
- Broad Compatibility: Works with service numbers like 12612397, 12594750, 12629019, and more.
- Expert-Backed Reliability: Based on real-world fixes I’ve handled, this restores power and efficiency without unnecessary downtime.
In my experience, drivers notice immediate improvements in acceleration and reduced hesitation during city driving. It’s like giving your Lucerne a fresh brain, ready to handle daily commutes or long trips with confidence.
Common Issues & How This Fixes Them
Owners of 2009-2011 Buick Lucerne models often face PCM-related problems, especially with the 3.9L engine. Symptoms include rough idling when stopped at lights, sudden loss of power on inclines, or the engine refusing to start on cold mornings. These stem from internal failures like corrupted software or sensor miscommunications, leading to diagnostic trouble codes (DTCs) such as P0601 (internal control module memory error) or P0171 (system too lean).
Replacing with our programmed PCM resolves these by recalibrating the system. For instance, if you’ve scanned and seen P0300 (random misfire), this unit’s updated firmware corrects ignition timing, preventing misfires. I’ve advised clients who towed light loads and dealt with overheating—the new PCM fine-tunes cooling fan operations, avoiding those issues. Another common fix: erratic transmission shifts fixed by precise shift solenoid control.
Tip: Before swapping, check battery voltage; low power can mimic PCM faults. If you’re troubleshooting, use an OBD-II scanner to confirm codes—our PCM clears them effectively once installed.
Easy Installation Guide
Swapping the PCM in your Lucerne is straightforward, often taking under an hour with basic tools. Located in the lower part of the air cleaner box, it’s accessible without major disassembly.
- Disconnect the battery to reset the system safely.
- Remove the air cleaner assembly to access the module.
- Unplug connectors, remove mounting bolts, and swap in the new PCM.
- Reconnect everything, then start the engine—our pre-programming means no dealer visit needed.
Pro tip: Label connectors to avoid mix-ups. If you’re not handy, a local shop can handle it affordably. This approach has saved countless owners from expensive diagnostics.
Fitment Details
This PCM fits a range of GM vehicles beyond the Lucerne, ensuring versatility if you own multiple models. It’s ideal for 2009-2011 Buick Lucerne with the 3.9L engine, mounted in the lower air cleaner box. Compatible service numbers include 12612397, 12594750, 12597125, 12629019, 12635902, and 12611549.
Compatible with:
- 2009-2011 Buick Lucerne (lower part of air cleaner box, 3.9L)
- Other models like Chevrolet Malibu (various years, 2.2L/2.4L/3.5L), Pontiac G6 (2.4L), Saturn Aura (2.4L, non-hybrid), and more as listed in detailed fitment.
Verify part numbers and provide your VIN for confirmation—we handle the programming to match perfectly. Don’t let a failing PCM sideline your drive; order now and get back on the road with peak performance. Act today for fast shipping and expert support!